|First appearance||Origin of Species Part 2|
|Voiced by||Scott Law|
Hydorous is a lion-like Bakugan that appears in Bakugan Battle Planet. He is the Guardian Bakugan of Shun Kazami. Hydorous is a noble and fierce Bakugan compared to his partner, who is timid and shy in front of cameras.
Fast, agile and ruthless in battle, the overtly-aggressive Hydorous is the prince of the seas. Though his style is a complete 180 from Shun's thoughtful manner, the two compliment one another in battle and life.
He first appears during a battle between a mysterious individual and Aay. Later that day, his partner Shun asks the AO if he could become the next member of their time. Magnus also wants to join; this causes Dan to start a competition to see which brawler will be added to the team.
In one event of the competition, the Brawler and their partner must race to the top of a mountain, Shun rides on Hydorous but is attacked by Magnus' Webam during the race. Hydorous battles against Webam but is also attacked by Magnus' Fangzor. Lia and Wynton send out their Bakugan to assist Hydorous but the two lose the fight, Webam then takes Hydorous down as Magnus proclaims his power that "proves he should be member of the Awesome Ones". Despite losing the battle, Hydorous and Shun become members of the Awesome Ones due to them caring for each other and being good teammates, Magnus did not get the chance because he focused on himself and his power rather than his partner Bakugan.
|Pyrus||400 (Core), 300 (Ultra)|
|Aquos||200 (Core), 400 (Core)|
|Haos||200 (Core), 200 (Core)|
|Darkus||300 (Core), 800 (Ultra)|
|Aurelus||400 (Core), 200 (Ultra)|
|Diamond||200 (Core), 400 (Ultra)|
- The background art for Aurelus Hydorous' BakuLog entry is an edited image of terminals from the Brisbane Airport.
Pyrus version of Hydorous
Bakugan Ultra version of Pyrus Hydorous
Aquos version of Hydorous (closed)
Bakugan Ultra version of Aquos Hydorous
Bakugan Ultra version of Aquos Hydorous (closed)
Haos version of Hydorous
Bakugan Ultra version of Haos Hydorous
Darkus version of Hydorous
Bakugan Ultra version of Darkus Hydorous
Aurelus version of Hydorous
Bakugan Ultra version of Aurelus Hydorous
Diamond version of Hydorous
Bakugan Ultra version of Diamond Hydorous
Package of Bakugan Ultra version of Aquos Hydorous
Package of Bakugan Ultra version of Diamond Hydorous
Aquos Hydorous on Hurricane Slash
Aquos Hydorous on Hydro Blast
Aquos Hydorous on Brain Geyser
Aquos Hydorous on Block Aquos
Diamond Aquos Hydorous on Hydorous (Aquos Card)
Diamond Aquos Hydorous Ultra on Hydorous Ultra (Aquos Card)