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Bioweapon Nova is a Kaiju from the ULTRAMAN manga, which is a clear reference to a saucer kaiju from Ultraman Leo. It first appeared in Volume 13, being sent by the Star Cluster Alliance.



Bioweapon Nova was sent by the Black Directive, a member of the Star Cluster Alliance, to kill the Leo Brothers after they surrendered to the SSSP. The beast landed in the middle of the city where the aliens and Ultramen were and began to indiscriminately destroy its surroundings. The Leo Brothers formed a team with the SSSP Ultramen, as they realized that they had become expendable, and fought back against the doll-like kaiju.

Despite initial success against Bioweapon Nova, the kaiju's red smoke caused interference with Shinjiro and Dan's suits. However, they regrouped with the Leo Brothers, Red and Adad and continued the battle, resulting in Nova's temporary incapacitation.

However, the Kaiju revived moments later and continued to fight. After a short struggle, Shinjiro removed his suit's limiter and vaporized half of Nova's head. The Star Cluster Alliance recalled their bioweapon from combat, leaving its opponents bewildered. In the aftermath of the battle, Edo berated Black Directive for his excessive attempt at silencing the Leo Brothers and Adad.


Powers and Weapons
  • Red Smoke: Bioweapon Nova can breathe a red smoke that acts as a jammer for technology.
  • Tentacles: Nova has many tentacles which it can use in combat.
ULTRAMAN Manga and Anime Characters
Ultramen Ultraman | Shin Hayata | Shinjiro Hayata | Dan Moroboshi | Seiji Hokuto | Kotaro Higashi | Jack | Leo Brothers | Daigo | Jiro Satsuma
SSSP Dan Moroboshi | Mitsuhiro Ide | Edo | Jack | Red | Akiko Fuji | Seiji Hokuto | Kotaro Higashi | Windam | Leo Brothers
Secondary Characters Yosuke Endo | Kurata | Rena Sayama | Shiraishi | Pigmon's Friends | Ultraman | Dave | Shirou Maki
Star Cluster Alliance Edo | Ambassador Mephisto | Agent Adad (formerly) | Alien Awazo | Ubarazu | Leo Brothers (formerly) | Bioweapon Nova | Black Directive | Alien Valky | Alien Zarab
Aliens/Kaiju Bemular | Edo | Alien Adacic | Alien Igaru | Red | Black King | Alien Kadder | Alien Robuton | Alien Bris | Agent Adad | Yapool | Ambassador Mephisto | Biological Weapons | Yuko Minami | Ace Killer Squad | Alien Awazo | Alien Pedan | Rei | Alien Druz | Four-Armed Alien | Gravity Alien | Sam | Leo Brothers | Alien Valky | Bioweapon Nova | Black King
Ace Killer Squad Ace Killer | Alien Nepenthes | Alien Woovelve
Star of Darkness Alien Pedan | Rei | Alien Druz | Golden Fortress | Four-Armed Alien | Gravity Alien | Alien Bado
Anime Only Shiraishi | Alien Robuton | Alien Pitt
ULTRAMAN: BE ULTRA-exclusive Aliens Alien Mukishibara | Alien Ruboia | Alien Alteric | Alien Exbes | Irindo | Alien Guinpe