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Musashi Haruno (春野ムサシ Haruno Musashi) is the main protagonist of Ultraman Cosmos. Before his mother remarried, his actual name was Musashi Isohata (五十畑 ムサシ Isohata Musashi).


"The defense army, no, not just them, even everyone from Team EYES thinks of a militaristic way to win. Disputes between forces, the disputes are always going on and on and on. If there's some other way..."

―Musashi questioning the JADF army and Team EYES' way of ending the battle with an iron fist.

Musashi is known for his pacifistic personality as he never wants to solve things in an aggressive way. However, this also leads him to protest against Team EYES and the JADF when such aggressive actions are ordered. This also lead some Team EYES members to suspect him as Ultraman Cosmos due to his gentle and caring nature. During the final fight against Chaos Header, Musashi finally defeats the evil entity by purifying him, something which even Ultraman Cosmos never thought to do.


Ultraman Cosmos: The First Contact

Meeting with Cosmos

Musashi Haruno was a fifth grader who dreamed of becoming an astronaut in honoring his late father Hiroyasu Isohata (五十畑 浩康 Isohata Hiroyasu), who died in a rocket accident in 1993. One night he met Cosmos after his battle with Basical, and revived him using sunlight. Cosmos then left him a blue gem which gave Musashi the ability to summon the power of the hero.

Battle Against Basical

During Basical's raid on the city, Musashi tried to summon the hero but he couldn't. He was forced to watch as the alien invader destroyed everything in his path.

Later on, after Basical was awoken by Shark's Jets, Musashi managed to summon the blue and silver gentle hero. Cosmos then fought Basical and both of them were evenly matched until Baltan morphed into his second form: "Neo Baltan." He was overwhelmed until he transformed into Corona Mode and gained the upper hand, managing to overpower the alien invader. The hero then used the Naybuster Beam and managed to knock the alien down. The alien realized what he had done as he just wanted to let his offspring to live on. It failed and he killed himself in grief. Just before he died, Cosmos turned back into Luna Mode and used the Luna Extract on the alien invader as his body was recovered by the Child Baltans. The military tried to kill Cosmos with their missiles, but was stopped by Musashi and his father. After finishing his battle against Basical, Cosmos left Musashi as the Earth was safe once again.

Ultraman Cosmos

Joining forces with Cosmos

Musashi now 19 years old, joins a wing of SRC known as Team EYES. He goes to Kapuya island to see Lidorias . As he saw that Lidorias was infected by an evil energy that were revealed to be Chaos Organisms, he goes to chase Lidorias that appeared in the city and Cosmos returned once again, joining forces with Musashi. Musashi himself transformed into Ultraman Cosmos and fought with Chaos Lidorias and managed to calm her down using the Luna Extract. Both Musashi and Cosmos later would face countless memorable monsters such as Golmede, Spittle, Igomas, Chaos Bug, Mogrudon, Mienin, Gamoran and many more.

Much more tough opponents appeared when the Chaos Organism unleashed the Chaos Headers such as Iblis and Mebut to face him. Unable to face the Chaos Organism with Luna and Corona Modes, Cosmos with some help from Musashi and his friends, was able to awaken his third transformation: Eclipse Mode that achieved when Cosmos gained Courage and he used 3 of his forms to face more dangerous monsters.

Final Battle against the Chaos Header

After being separated from Cosmos, Musashi was rendered useless to fight Chaos Header. Even worse, Chaos Header appears and terrorizes as Chaos Darkness. Cosmos appeared and fights the dark monster but Musashi orders Cosmos to stop, feeling that Chaos Header has their inner goodness somewhere in their heart but no avail as the giant paid no attention to Musashi. As Cosmos was on the brink of defeat, Musashi fuses with him again and thus with the help of Lidorias, Bolgils, and Mogrudon, Chaos Header finally purified, turning him into an angel and leaves. Cosmos thanked Musashi for defeating Chaos Header in a harmless way and leaves.

Ultraman Cosmos 2: The Blue Planet

NOTE: Musashi's role varies from two different versions of the film due to Sugiura's arrest before the uncut version of the film was premiered.

It has been a year since Musashi retired from being a Team EYES member and now he has finally achieved his dream to become an astronaut. Musashi pilots his Planet 1 aka. TECCH Spinnar KS-1 and went on a journey to the planet Juran. However, much to his horror, the planet appeared to be a reddish and dusty wasteland. Not only that, Parastan, the planet's protector had died. Suddenly, a flying monster burst out from the ground and fired a reddish energy ball. As it about to ram Musashi's TECCH Spinnar KS-1, Ultraman Cosmos appeared and saved him. As they dueled, Musashi found out that the monster is responsible for turning Juran into a barren wasteland via its energy beam. Cosmos destroyed the monster, causing a giant explosion and quickly rescued Musashi from the explosion. Musashi attended his childhood friend's wedding and later witnessed a mermaid. One of his friends, Tutomo, mocked him for believing in a mermaid but Mari objects to it, implied that Musashi might be talking the truth ever since his first encounter with Cosmos. As it starts to rain, Tutomo cowardly hides under the table with Mari mocking him, causing Tutomo to take a nearby soda and spraying it on Mari, starting a soda fight with his friend as they are watched again by the mermaid.

The next day, when Musashi and Mari went snorkeling, they discover a portal underwater and at the same time are ambushed by a stingray kaiju. As Musashi was about to follow Mari, he was knocked down unconscious. Later, two figures approach him. One was a man and the other a woman/mermaid that he had witnessed before. The man decide to eliminate Musashi for interfering with them but the woman objects, but it was already too late as he already fired an energy blast at Musashi. He awakens at the hospital as his friends visits him but Mari was nowhere to be seen. Then, Koji, an original member of SRC and now a captain of Team SEA approaches him as he was glad that he had survived. Musashi was taken to their base and revealed that the monster he encountered earlier was Reija, who was detected undersea a year ago.

They were interrupted by a warning where a monster named Scorpiss was entering the Earth's atmosphere. Musashi recognizes him from earlier for turning Juran into a barren wasteland and killing Parastan. Musashi was joined by Team SEA launches with their TROY AS and TROY BS. As the monster rampaged in the city, it begin to destroy a hospital that Musashi's friend resided in. Once they were about to be killed, Team SEA fires a missile, bringing it away from the hospital. Reija appears and fought the monster but only to be overpowered by the menace. Musashi exits the TROY BS and brings his friend to safety.

There, he witnesses the mermaid, now having human legs fuses with Reija, making the monster stronger but still, overpowered by Scorpiss. Musashi takes his Cosmo Stone and transforms into Ultraman Cosmos Skeleton Corona Mode. The phantom-looking Ultra rescues Reija and overpowers Scorpiss while destroying it with the Blazing Waze. However, all he had foreseen was a dream and realize that Cosmos will never return. Scorpiss retreated for a while and the mermaid reveals her name as Shau while telling Musashi that Mari is with her people.

Soon the Team SEA follows Shau and Reija to their hideout where a portal opens, leading to her people's hideout. Once arrived, they were introduced to Alien Gyashi, where their leader, Jin, holds a dislike towards humans for being selfish. Musashi encounters him earlier in a dream where he got destroyed by Jin. Mari appears and leads them to their base where she revealed that Child Baltan from 10 years ago brought her to this place.

Shau reveals that sometime ago, Sandros and his Scorpiss terrorized their planet and turned it into a wasteland. As the Alien Gyashi migrated, Scorpiss chased them and destroyed them. When Jin's crew were about to be eliminated, a being with a light silhouette destroys them and lets the remaining Gyashi flee safely. The being itself had been acknowledged as a God by their species.

A swarm of Scorpiss arose and were on their journey to Earth in seven days. Team SEA discusses this matter with the Earth Defense Forces where they agreed to have the Alien Gyashi assist them in protecting Earth from Scorpiss. Three days before the Scorpiss invasion, SRC developed a force field used to defend the Earth from the monsters. Musashi receives a call from Mari to go to Space Zone. There he found Mari unconscious and Jin begins to attack Musashi for making Shau trust humanity. However, he stops when he realizes that Musashi didn't attack him and instead never giving up on convincing him to trust humanity.

Developing a change of heart, Jin uses his power to complete the force field system, causing a giant shield to cover the Earth and protecting it from a swarm of Scorpiss. Though proven effective, a dark vortex empowered some Scorpiss as they were used to perform a kamikaze attack to destroy the shield and ease the invasion. Soon, Team EYES started to help as Musashi, their former team member also involved in this operation.

After witnessing Shau and Jin's bravery, Musashi finally regains his bravery and calls on Cosmos once again. Cosmos appears in Eclipse Mode where he demolishes the entire Scorpiss before Sandros appeared and overpower him. Another Ultraman much like Cosmos, whose the legendary God/protector of Alien Gyashi came to Earth at the end of the Scorpiss invasion. Attacking the invasion’s forerunner, Sandros, at the moment it attacked Cosmos. The Ultra knocked the monster to the side. As it recovered, he delivered some of his energy to the weakened warrior, allowing them both to take on the vile monster.

As they did so, Sandros began to unleash its black cloud, blocking out the sun. In complete darkness the pair of heroes was attacked mercilessly by its energized blades. The foolish monster, however, eventually made a mistake. Charging up its fireball exposed itself in the darkness, allowing both Cosmos and Justice to quickly fire off their Cosmium and Victorium Beams, annihilating the fiend and saving the Earth yet again. Cosmos separated from Musashi again as the Ultras leave and Jin revealed to have survived from the Scorpiss attack thanks to Reija and that their experiment finally achieved its success.


Ultraman Cosmos vs. Ultraman Justice: The Final Battle

Few years after Sandros was defeated. Musashi met Fubuki that he is ready to pilot and travel to Planet Juran with some of the monsters on Monster Island to Juran. Suddenly, Gloker Pawn appear and attacks the base and aims to destroy the space capsule that will contain the monsters. Cosmos arrives at that time to stop the duo but ended up being defeated. Musashi used the Cosmo Stone and merged with Cosmos and once again reached Eclipse Mode and paralyzes the two. But, Ultraman Justice appeared and revived the two Gloker and stopped Cosmos from making any movement. At the end, Musashi sacrificed his life with his Color Timer being hit so hard and died making Fubuki swear vengeance on Justice for a while.

After being revived by the combined effort of Ayano, his mother, Captain Hiura, Mizuki, Doigaki, Ikema, Mini, Child Baltan, Mari, Shau and Jin with faith and hope that revive Musashi and Cosmos and a new, Future Mode, was born. He arrived and transferred half of his energy to Justice and together destroyed Gloker Bishop.

Cosmos and Justice went to space and tried to stop Giga Endra with Cross Perfection but failed. Justice then became a shield to Cosmos and tried to destroy Giga Endra but the two were exhausted and ended up being swallowed to by Giga Endra's final attack. But, they still not give up and the two fuse to become Ultraman Legend and destroyed Giga Endra with the Spark Legend from inside and the two split. While Julie remained on Earth and replaced Musashi as its protector, Musashi and Cosmos travel to Juran and create the new habitat there.

Ultraman Saga

Musashi with his family

He returns in the movie, Ultraman Saga, along with Asuka and Taiga. It is revealed that he's married with Ayano Morimoto, with whom he had a 10-year-old son named Sora Haruno.

In his universe, Musashi had traveled to Planet Juran, where he, Cosmos and Chaos Header 0 acted as its defenders. He received a message from an unknown person. Musashi arrived in time to reach another universe's version of Earth to save Taiga and Takeru from Gubila's attack. Then, Musashi and Taiga ended up being recruited by Team U to fight against Alien Bat and Hyper Zetton (Gigant).

On the next day, Gubila and Gomess appear to attack them and Musashi transformed into Ultraman Cosmos and gained the upper hand until Gubila and Gomess going berserk and Ultraman Zero comes to aid him (even though due to Taiga's stubbornness, he can't grow into full size) and use Full Moon Rect to calm the duo kaiju. After then, Alien Bat came and destroyed them because of their failure and warned Cosmos to not intervene with his plans.

Musashi question Team U about another Ultra before him but they not answer him. Then, Taiga realized that Ultraman Dyna actually came to their Earth before them and ask where he is. Before sleep, Musashi tells the children about Juran, and the kids enjoyed hearing about the planet. In the morning, alien attacked their base and showing that Dyna is now in a deceased state after being defeated by Hyper Zetton (Gigant) not long ago. Hyper Zetton (Gigant) sent fireballs and Musashi transforms into Ultraman Cosmos and protects them with all that he got.

After realize that Team U is actually a fake team but they volunteer to save their fellow member. Taiga with his morale about faith on an Ultra restored together with Musashi ready to fight Hyper Zetton (Gigant). They transform and fight Hyper Zetton (Gigant) but manage to destroy one of its Dark Fireballs Sphere. Unfortunately, Hyper Zetton (Gigant) managed to paralyzed Cosmos and left him unconscious which left Ultraman Zero to fight it alone.

After Dyna was revived, he restored Ultraman Cosmos and the trio successfully destroyed Hyper Zetton (Gigant). However, a more dangerous foe appeared after Alien Bat's spaceship combined with Hyper Zetton (Gigant) and transformed into Imago Hyper Zetton and bested them with ease. Cosmos and Dyna managed to revert to their hosts but Zero died because of his injuries. Musashi and Asuka then told Taiga to never give up and trust in their faith and a miracle beyond what they can achieve would happen. Their bond revived their light and transformed them together into a new fusion Ultra, Ultraman Saga and destroyed Hyper Zetton with the Saga Maximum with help from Team U.

Musashi as Cosmos then returned to his world and reunited with his family and lived happily there.

Ultraman Ginga S The Movie: Showdown! The 10 Ultra Warriors!

In the beginning, Musashi as Cosmos in Corona Mode battled Etelgar on Planet Juran. When Cosmos attempted to defeat Etelgar, the wicked monster used a golden aura to force him into Luna Mode and seal him. Cosmos managed to separate from Musashi before being fully sealed by Arena. Musashi joined forces with UPG along with Hikaru and Shou to save the Ultra and defeat Arena and Etelgar. He reunited with Ultraman Zero, However, Etelgar was defeated and forced to retreat and then Zero and Musashi have a chance to train them. He then fought Arena and destroyed the domain that sealed the Ultra and merged again with Cosmos. He, along with the other Heisei Ultra give Hikaru the power of the Heisei Ultras into the Ultra Fusion Brace. Hikaru and Shou transformed together to became Ultraman Ginga Victory and destroyed Dark Lugiel. He and Ginga Victory left the other six Ultra to fight their old enemies that were made by Etelgar and together faced Etelgar themselves. Cosmos transformed into Eclipse Mode and had his rematch against Etelgar. He then with Ginga Victory managed to defeat Etelgar once and for all and restored Arena to her old self.


Musashi returns in the miniseries as he was first introduced while he was in Planet Juran, checking up on Bolgils. As he was doing that, Shin Asuka then called him for help as Musashi accepts before transforming into Cosmos as he goes to where Asuka was.


Mega Monster Battle: Ultra Galaxy Legends The Movie

Main article: ZAP SPACY (Zata Astromical Pioneers SPACY)


The alternate counterpart of Musashi Haruno is a ZAP SPACY operator who didn't join the Pendragon crew but instead works at the base. Mega Monster Battle: Ultra Galaxy Legends The Movie


Cosmo Pluck (コスモプラック Kosumosu Puraku): Musashi holds the Pluck then holds both his hands to his chest in a formation as if he's holding on to a sphere, Cosmos' energy then forms in Musashi's hands then flashes away, Musashi then immediately raises the Cosmo Pluck to the air and shouts "Cosmos!". Cosmos' then emerges in his default form, the blue Luna Mode.

Powers and Weapons

  • Pilot Training: Even before joining EYES, Musashi was a trained pilot. He is also trained in the usage of all their Mechs.
  • Astronaut Training: Musashi is also a trained astronaut with at least two known extra-terrestrial missions in his career, documented in the overall series.
  • Marksmenship: As a member of EYES, Musashi is trained in the use of their weapons.
  • Monster Rearing: Before joining EYES, Musashi worked as the caretaker of various giant creatures.
  • Cosmo Stone: A gift from Cosmos when Musashi was a child.
    • Summoning: The original purpose of the stone is to summon Ultraman Cosmos, providing a quick route to Earth wherever in the cosmos he may be.
    • Light Transformation: When separated from Cosmos, Musashi has on several occasions used the stone to transform himself in a ball of light to merge with the giant and assist him.
    • Monster Charming: By spinning the stone on the mid-air, it can emit a tune which calm monsters though its only function was seen on Lidorias.
  • Cosmo Pluck: Musashi can use the Cosmo Pluck to transform into Ultraman Cosmos.
  • Telepathy: After merging with Cosmos, Musashi is able to communicate with others telepathically.



  • Member Musashi Haruno[sic] (2001)
    • Release Date: 2001
    • Price: 700 yen
    • JAN/ISBN: 4543112006929
    • Materials: PVC
    • Accessories: Cosmos Pluck, Rounder Shot
Released as the first and only human-based addition for the Ultra Hero & Monster Series lineup, Musashi is a 6-inch figure that is molded in skin-colored soft vinyl plastic, and features a high amount of paint operations on his attire & helmet. He also comes with a Cosmos Pluck & a Rounder Shot accessory to wield with.
Not counting the Bullmark toys, Musashi Haruno is the first & only human character to be released as a soft vinyl figure by Bandai.


  • DX Ultraman Cosmos (DX, 2001)
    • Release Date: Early November 2001
    • Price: 6,458 yen
    • Materials: PVC, ABS
    • JAN/ISBN: 4543112031167
    • Accessories: Musashi Haruno figure
DX Ultraman Cosmos comes with a small Musashi Haruno figure to interact and activate either of the Ultra's sound effects.


Ultraman Cosmos

Ultraman Cosmos: The First Contact

Ultraman Cosmos 2: The Blue Planet

Mega Monster Battle: Ultra Galaxy Legends The Movie

Ultraman Saga

Ultraman Ginga S The Movie: Showdown! The 10 Ultra Warriors!



  • Musashi was born in 1990.
  • Musashi is the Heisei Ultra Host with the most appearances in movies, with Shin Asuka and Mirai Hibino behind him.
Human Hosts and Forms
Showa Hosts Shin Hayata | Dan Moroboshi | Hideki Go | Seiji Hokuto | Yuko Minami | Kotaro Higashi | Professor Ohtani | Shuuhei Aragaki | Tetsuya Kitajima | Tadao Nambara | Takashi Ueno | Gen Otori | Choichiro Hikari | Kyoko Kodaka | Takeshi Yamato | Ryoko Hoshi | Scott Masterson | Chuck Gavin | Beth O'Brian
Heisei Hosts Jack Shindo | Dan Moroboshi (Heisei Ultraseven) | Kenichi Kai | Masaki Kazamori | Genki Kagura | Mysterious Girl | Shin Kenmochi | Agent Sean | Masato Usami | Katsuto Asahi | Daigo Madoka | Tsubasa Madoka | Amui | Shin Asuka | Gamu Takayama | Hiroya Fujimiya | Ginga Yumeboshi | Musashi Haruno | Julie | Shunichi Maki | Jun Himeya | Ren Senjyu | Nagi Saijyo | Kazuki Komon | Kaito Touma | Ikuo Hasunuma | Mirai Hibino | Kazuya Serizawa | Ryu Aihara | Shingo Sakomizu | Jin | Run | Nozomu Taiga | Hikaru Raido | Sho | Daichi Oozora | Sayuri Tachibana | Yuuto Tamaki | Gai Kurenai | Riku Asakura | Leito Igaguri | Katsumi Minato | Isami Minato | Rosso | Blu | Asahi Minato
Reiwa Hosts Hiroyuki Kudo | Haruki Natsukawa | Kengo Manaka | Ribut | Ignis | Kanata Asumi | Shinji Kaminaga
Evil Ultra Hosts Keigo Masaki | Riko Saida | Shinya Mizorogi | Hiroyuki Misawa | Mitsuhiko Ishibori | Soso | Utsuutsu | Arie Ishikari | Makoto Aizen | Kirisaki | Zabil
Other Ultraman Media Takeshi Yoshioka (Hyperspace) | Ikuru | Shin Moroboshi | Kazuma Asuka | Akiko Fuji (Ultraman F) | Shin Hayata (Marvel) | Dan Moroboshi (Marvel) | Lili Archive
Other Hosts Takeshi Hongo | Kyotaro Kagami | Officer Sakomizu | Goro Kirishima | Yuji Hayase | Tetsuo Hayase | Lily Hayase | Daisuke Misaki | Naoki Tachibana | Koh | Ai Tachibana | Zen Tachibana | Toki Goh | Naoto Sho | Takeshi Todo | Ippei Baba | Yuka Inoue | Mai Midorikawa | Sam Collins | Ai Kumashiro | Akira Kageyama | Rei | Nao | Tomoya Ichijouji | Daisuke Misaki (Glenfire) | Amate | Yuta Hibiki | Hikari Kaizaki | Chloe