Hikaru Raido

Hikaru Raido (礼堂ヒカル) who is 17 years old, is the main protagonist and Ultraman Ginga's human host. His dream is to be a world wide explorer. He returned in Ultraman Ginga S as a member of UPG

Ultraman Ginga
Born and raised in a small village where his grandfather's Ginga shrine was located. Hikaru left for Londom with his parents, musicians but came back to the town due to a strange vision. Prior to this the three had settled in London and Hikaru was returning during his summer break. As a high-school student Hikaru returned home to find his grandfather's shrine had been destroyed by a sudden fire. The shrine was ultimately saved and temporarily moved into a nearby school. There he met up with his childhood friends and learned one of them had become a priestess. Later that night he returned to see the item of interest, the Ginga Spark, upon touching it he saw a vision of a great war between giants and monster, ending with a dark figure unleashing a wave of darkness on all the combatants. It was this point he met the talking Spark Doll, Ultraman Taro who told him he may be the 'chosen one'. Hikaru treated Taro as a simple doll, picking him up rudely and trying to figure out where his voice was coming from. Insulted and not willing to put up with his childish antics, Taro teleported away. From afar, Taro's voice commanded he meet him in a nearby mountain, playing on his desire to see new things.

It was at this time that Hikaru received a strange mark on the back of his right hand, a glowing symbol that faded, it was called the Mark of Courage. Apparently this mark appears in the Legends of the Land of Light, as stated by Taro.

Later Hikaru met his friend again in the mountains where the two confronted a pair of illegal dumpers. They got away even with the town policeman after them. The pair met Taro again who explained that he believed he was able to use the Ginga Spark. A fact proven true when he used it on a Black King Doll, becoming the bodyguard monster. Suddenly he was attacked by Thunder Neo Darambia, being controlled (more likely it was controlling them) by the two illegal dumpers and a Dark Dummy Spark. Hikaru fought to protect the town and his friends but was being easily beaten. Eventually, his determination caused the mark of courage to appear on his hand and summon the Ultraman Ginga Spark Doll. Hikaru switched his form to that of the powerful Ultra and after a short fight defeated the monster. Afterwards, this helped him in many battles against humans and even some of his own friends that Darklived into kaiju and aliens (Thunder Darambia, Kemur Man, King Pandon, Ragon, etc) via Spark Dolls and Dark Dummy Sparks which distributed by the mastermind's agents; Alien Valky, Alien Icarus and Alien Nackle Gray. At the same time, this allows Hikaru to receive the Spark Dolls that he aqcuired after their defeat.

After Tomoya Ichijouji, a dark agent redeemed and assist Hikaru/Ginga the battle against Alien Valky and Tiga Dark, Ginga spoke for the first time, commenting on Jean-nine's revival though he didn't answer Taro's questions. In the aftermath of Hikaru/Ginga's battle with Dark Galberos, Ginga spoke again and said that every time a monster was brought back (Darklived) into the world the forces of darkness were growing stronger and that 'his' return was nearing.

At the end of the series, the true mastermind behind the chaos, Dark Lugiel appeared after being revealed to have been dominated inside Principal Kyoko Shirai all along. Hikaru lives into Ginga to face Dark Lugiel but before he can complete his rise, Lugiel interrupts it and kicks him into a cliffface, stunning the Ultra. As a result of not being able to reach his full height, Lugiel dominates Ginga easily and he soon runs out of power. Later, when Ultraman Taro is fighting Lugiel, he gives energy to Ginga at the cost of Taro himself taking the brunt of Lugiel's attacks. After Taro vanishes, Ginga is revived and grows back to his original size. Summoning the Ginga Spark and turning it into a trident, he takes the fight with Dark Lugiel to the moon, and after a hard struggle, he defeats him with Ginga Especially. Ginga is last seen thanking Hikaru and friends for all they have done before departing the Earth. Hikaru and his friends later celebrated over their victory.

Ultraman Ginga S
Two years later, Hikaru finally pursued his dream to become an adventurer. Later, while walking in a jungle, he stumbled upon a Victorium Crystal and has a vision of Shou and Ultraman Victory. Hikaru, who is nearby, then observes Arisa and Gouki evacuate everyone while attempting to shoot at Shepardon without much success and Shou commanding Shepardon to return to the underground.

Hikaru then meets up with Shou and has some dialogue with him, but Shou states that he is different from the humans on Earth. He then spots the Ginga Spark in Hikaru's pockets and is astonished. Before he can say anything further, another Victorium Crystal is unearthed and Shou rushes to the scene. He is delayed by One Zero summoning her robot underlings, Chiburoids. One Zero then MonsLives into EX Red King to destroy Shepardon.

Shepardon, on the verge of defeat, is saved by Shou who transforms into Ultraman Victory. During the battle, the combatants scatter debris everywhere, some of which landed on the UPG members. Unable to shift the debris himself, Hikaru wishes for more power to save everyone. The Ginga Spark flashes with power, and Hikaru transforms into Ginga, saving Arisa and Gouki. He then fights EX Red Kingand wins, but to his surprise, Victory intercepts Ginga with the Victory Slash before the latter can collect EX Red King's Spark doll. He steals it and uses its powers to transform his right arm and attack Ginga immediately, much to Hikaru's shock. But as Ginga and Victory continue their clash, their fight to be unresolved when they run out of energy. Hikaru talks with Ginga in his mind, whilst Shou questions his Queen about Ginga's identity. Soon, UPG bring Hikaru back to their HQ and decide to recruit him. At the same time, Hikaru meets his old friend, Tomoya, again.

Later, as Hikaru was sent to the city, he met Shou again but in the middle of their fight, when a debris from Eleking's rampage about to fall, he saved Shou again.

Shou transforms into Victory but soon falls victim to Eleking's electrocution attack. Hikaru transforms into Ginga to provide Victory with an opening, and Victory manages to defeat Eleking, obtaining its Spark Doll. Afterwards, Shou and Hikaru reconcile as both of them finally acknowledge each others as heores, with Hikaru giving Shou another chocolate bar.

Powers and Abilities

 * Transformation : Using the Ginga Spark and the Ginga doll Hikaru can transform into Ultraman Ginga. Hikaru can only transform when the Mark of Courage is made to shine, thereby summoning Ginga's Spark Doll from the Ginga Spark.
 * Ultra Live : Hikaru can use any of the other Spark dolls to become the monster, alien or Ultra they embody via the Ginga Spark.
 * Telepathy : While using a Spark Doll, Hikaru can communicate telepathically or at least project his voice even in forms that normally do not allow for complex speech such as a monster.
 * Spark Doll Sight : While he is Lived with a Spark Doll, he can look into other Lived Dolls and see who is within them. However, he could not see into Jean-Killer due to his nature as a robot being piloted nor Tiga Dark who did not have a user.
 * Training : Like most UPG members, Hikaru is also a well trained in combats.

Spark Dolls
As foretold by Ultraman Taro, Hikaru is the "chosen one", he collects Spark Dolls either by defeating any Kaiju/Alien recently released by Alien Valky/Alien Icarus/Alien Nackle (at the same time preventing the dolls from falling into the wrong hands again) or picking up the ones that are scattered around town. However, Hikaru loses all of these collections after Dark Lugiel's defeat in response to the end of the Darkness Spark's curse.

Ultras

 * Ultraman Ginga - Inside the Ginga Spark.
 * Ultraman Taro - Failed, assumed due to his consciousness being intact. His curse is broken in the final episode, but reverts to being a spark doll after Ginga beats Dark Lugiel before departing Earth.
 * Ultraman Tiga - Achieved after defeating the Ultra himself, at the same time purifying him of the darkness. Also used by Kenta once.
 * Ultraman - Acquired after defeating Misuzu's father. Also used by Chigusa once.
 * Ultraseven - Acquired after defeating Misuzu's father. Used again by Seiichiro.

Kaiju

 * Black King - Acquired after detecting it via Ginga Spark.
 * Thunder Darambia - Acquired after defeating the monster itself.
 * King Pandon - Acquired after defeating the monster itself.
 * Ragon - Acquired after defeating the monster itself.
 * Doragory - Received from Kenta.
 * Eleking - Acquired after defeating the monster itself.
 * Seagoras - Acquired after defeating Tyrant.
 * Hanzagiran - Acquired after defeating Tyrant.
 * Red King - Acquired after defeating Tyrant. Gave it to Misuzu Isurugi
 * King Crab - Acquired after defeating Tyrant.
 * Bemstar - Acquired after defeating Tyrant.
 * Barabas - Acquired after defeating Tyrant.
 * Dark Galberos - Acquired after defeating the monster itself.
 * Zaragas - Acquired after defeating the monster itself with the help of Misuzu, as Red King
 * Antlar - Acquired after the fight between Ultraman Dark and Ultraseven Dark (the one who actually defeated Antlar).
 * Super Grand King - Acquired after defeating the monster itself.

Aliens

 * Kemur Man - Acquired after defeating the alien itself.
 * Alien Valky - Acquired after defeating the alien itself along with Tiga.
 * Alien Icarus - Acquired after defeating Tyrant.
 * Alien Nackle - Acquired after beating Super Grand King.

Ultras

 * Ultraman Ginga - In the Ginga Spark
 * Ultraman Taro - Acquired as Strium Brace.

Kaiju

 * EX Red King - Acquired after defeating the monster itself. Later stolen by Shou.
 * King Joe Custom - Acquired after defeating the robot itself. Gave it to Shou.
 * Sadora - Acquired after defeating the monster itself. Give it to Shou.

Aliens

 * Yapool - Acquired after defeating him himself.

Ultraman Ginga
When Ginga fells that Hikaru needs him the Ginga Spark doll emerges from the Ginga Spark. Hikaru then grabs it, and places it on the Spark causing the face to appear and a voice to declare "Ultra Live: Ultraman Ginga". In the transformation scene. Hikaru body is enveloped by light which forms twins galaxies in an X formation. Ginga rises out of this spinning. Ginga than lands often kicking up a circle of dirt.

Ultraman Ginga S
Hikaru summons Ginga's Spark doll, then waves his arms in a circular fashion before placing Ginga's doll on the Ginga Spark. The face on the Spark is revealed and Hikaru shouts "Ginga!" to complete the transformation.

Trivia

 * Hikaru is the first main character of an Ultra series who is not consistently merged with his Ultra.
 * Hikaru resembles Tsukasa Kadoya from Kamen Rider and Captain Marvelous from Super Sentai franchise. All three can transform into past heroes.
 * Also, Hikaru is the first main character that his identity as Ultraman is not a secret, but his childhood friend Misuzu Isurugi the first person who know Hikaru is Ultraman Ginga.
 * Takuya Negishi will reprise his role as Hikaru Raido in Ultraman Ginga S.
 * Hikaru is the third ultra host not to be a member of a monster fighting force the first being Shunichi Maki (Ultraman the next) and Ran (Ultraman Zero the Movie), but in the second season he become one.
 * To be more intresting, when Shou first met with Hikaru he was hungry, Hikaru gave him a chocalate bar which have a logo of "v" of Ultraman Victory motif.