Hydranoid (Generation 1)

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For the Bakugan Battle Planet version, see Hydranoid (Generation 2).
Very observant, human. For I am the most powerful Bakugan ever. And I have no limit. I feed on Bakugan I send to the Doom Dimension, just as I'll feed upon your precious Drago.
Hydranoid to Dan, Just For The Shun Of It
5f0f7d9d094ff107 bk hydranoid.png
Attribute Darkus Darkus
Power 450 Gs
Variations Hydranoid
Dual Hydranoid
Alpha Hydranoid
Voiced by Izo Oikawa (JP)

Hydranoid, Hydra (ヒドラ, Hidora?) in the Japanese version, is Masquerade's Partner Bakugan in Bakugan Battle Brawlers.



In Hydranoid's unevolved form he walks on four legs, has three purple teeth jutting out from his upper jaw, and a long neck and tail. It also has pink spines running from the middle of its neck to about the end of its tail, which somewhat resembles the tail of a stegosaurus. In addition to this, he has a large pink horn on its nose and red eyes. It also has the starting of the blade in the center of its chest although it cannot move yet. As he evolves, he gains one more head.

Its entire body is composed of a highly intelligent, independent cell structure. His tail can be a very dangerous weapon along with his bite and power blasts.

Bakugan Official Handbook[edit]

Hydranoid is a hulking dragonlike beast with sharp spikes all over its body. It is even more ferocious than it looks. This vicious Bakugan is known for being cruel and merciless in battle. It takes pleasure in pounding opponents with its tail.

Bakugan: Ultimate Handbook[edit]

Hydranoid's unevolved form is tough, too. The special cell structure of this Bakugan makes it difficult to injure in battle, and its fighting abilities makes for a formidable attack. Hydranoid's long, spiked tail has sent more than one foe to the Doom Dimension!


Bakugan Battle Brawlers[edit]

Masquerade has complete power over Hydranoid; its ultimate evil master. As his partner, it is cruel and merciless in battle, and feeds off of the energy gained from defeating an opponent. Masquerade uses Hydranoid to become the ultimate Bakugan so that Hydranoid can hold and bring the Infinity Core to Naga. It is later revealed that Masquerade wants to become the greatest Bakugan Brawler in a battle with Alice and Exedra in the Doom Dimension. Based on the words he uses, his motive for fighting for Naga, is for the glory of being great in battle.

As Alpha Hydranoid, he briefly teams up with Drago to help him and Dan defeat Druman and Centorrior, the two Pyrus/Darkus hybrid gatekeepers. Shortly afterwards, it becomes Alice's Partner Bakugan, due to Masquerade fading away (along with the negative energy that corrupted them), and its demeanor becomes much less aggressive. He played an important role in the Brawler's quest to defeat Naga and unite Vestroia.

In episode one of the series, a Pyrus Hydranoid can be seen in Dan's Bakugan box, specifically in the upper right corner of it.

Ability Cards
  • Chaos of the Darkness (Chaos of Darkness): Allows Hydranoid to attack from any Gate Card.
  • Auragano Revenge: Subtracts 100 Gs from each opponent and adds 100 Gs to Hydranoid.
  • Merge Shield: Allows Hydranoid to steal all G-power the opponent gained during the battle (Note: the G-Power he steals is not transferred, but added to his current power level).
  • Gravity Chamber: Moves all opponents on the battle field to Hydranoid's card and whoever's power level is lower than his, is defeated.
  • Darkus Gravity: Adds another Darkus Bakugan to the battle.
Fusion Ability Card
  • Destruction Buster: Adds 100 Gs to Hydranoid and nullifies the opponent's Gate Card.

Ability Card (Bakugan Video Game)

  • Chaos of the Darkness: Adds 200 Gs to Hydranoid.

Physical Game[edit]

Hydranoid opens with its head flipping open first, then two parts on its sides extend. The legs have to be opened manually along with the three horns on its neck and head.

Hydranoid was included in Masquerade's Brawler Evolution Pack, a Wal-Mart Exclusive. The Darkus version has 500 Gs and the Pyrus version has 530 Gs. The Darkus version was reprinted and can be found in a BakuLegacy 3-Pack from Bakugan: Mechtanium Surge.

Trading Card Game[edit]

Image Card Name Card Type Card Series
BA137 GA SM dusk F.png
Dusk Silver Gate Card 5/48
Power from Darkness Blue Ability Card 38/48
BA182 GA SM card force.png
Card Force Gold Gate Card 2/15a
BA194 AB SM do over.png
Do Over Red Ability Card 14/15a
BA208 GA SM forest fire.png
Forest Fire Gold Gate Card 13/48b
BA219 GA SM river styx.png
River Styx Copper Gate Card 24/48b
BA224 AB SM clean slate.png
Clean Slate Red Ability Card 29/48b
BA240 AB SM darkus2.png
Darkus 2 Green Ability Card 45/48b
BA273 AB combobattle 30.png
Combo Battle Red Ability Card 30/48c
BA2 LegendsofDarkness.jpg
Legends of Darkness Red Ability Card BA2
Deka Darkus card.png
Deka Darkus Silver Gate Card 5/6deka


  • Hydranoid is based on the Hydra, a monster of Greek Mythology, that had the body of a serpent and multiple heads.
  • As an easter egg, in episode one of the series you can see a Pyrus Hydranoid in Dan's Bakugan box, specifically in the upper right corner of it. It is drawn based on the first concept art of the Hydranoid's ball form before he got his numerous neck spikes. This concept art, despite being black and white, was originally drawn with a Pyrus symbol. This is likely the reason why he was only released as Darkus and Pyrus in the physical game. In terms of the anime, it can be assumed it was an error.
  • As Alpha Hydranoid/Dual Hydranoid Bakugan form he is able to speak from each head as opposed to ball form when only one can.
  • When Hydranoid first appeared his voice was high and human-like.
  • In the trailer for the Bakugan Video Game, Masquerade is seen throwing an Aquos Dual Hydranoid, but it stands as a normal Darkus Hydranoid.
  • Hydranoid is missing its horn in the DS version of the Bakugan: Battle Brawler game.
  • According to Bakugan.com, all abilities of Hydranoid can be performed by its evolutions.
  • In the Bakugan Official Handbook, Dual Hydranoid and Hydranoid's descriptions are merged into one, with an image of the toy form of Dual Hydranoid, due to a toy form of unevolved Hydranoid not existing at that point in time.
  • Hydranoid is the only Bakugan released after its evolved form.