Typeicon-Bakugan Typeicon-Aquos Typeicon-SYW

This page refers to the Bakugan fan character, Leviathan. For the original incarnation, see Leviathan.

Leviathan deep sea guardian by zephyros phoenix-d3eqhgr

Aquos Leviathan is the primary guardian of Sora Minamoto.

Personal data
Nicknames Lex
Gender Male
Species Vestroian Bakugan
G power 800
Occupation Battle Brawlers member
Morality Good
Living status Alive
Production notes
Created by Zephyros-Phoenix
Appearances Second Chances
Spread Your Wings chapter 5 (official)

Aquos Leviathan (アクウオス・ラヴァイアサン Akuuosu Ravaiasan), commonly referred to as Lex (レックス Rekkusu), is an Aquos attributed Bakugan and one of the two guardians of Sora Minamoto.

Physical description

Lex is a giant crustacean-like creature with two giant claws and two smaller claws and a large tail. His body is dark blue and dark green and his claws are designed to look like heads, likely to compensate for his tiny head. His eyes glow red and markings on his body glow light blue. On his antenna are three glowing orbs, one of which he tore off his body to give to his lover, Plezira.


Lex is a very strong-willed creature and is not afraid to showcase his abilities and powers. He takes any insults to his lover seriously. Where Plezira would often encourage Sora to think things over, Lex's advice is usually more blunt and assertive, with a reckless streak.


Sora Minamoto

As her primary guardian, Lex is Sora's go-to Bakugan. While he does not share Nessie's softer more consoling approach to helping Sora, she does confide in him nonetheless.


Lex is madly in love with his mate, Plezira and is highly protective of her.


  • Blue Lightning: Transfers 400Gs to Leviathan.
  • Claw Hammer: Adds 500Gs to Leviathan.
  • Tsunami Tail: Nullifies opponent’s ability.
  • Flash Freeze: Prevents opponent from activating any more abilities.
  • 10 Eyes: Adds 700Gs to Leviathan.
  • Jewel Link: Adds 500Gs to Leviathan and automatically summons Plezira.


Leviathan came from the Aquos realm of Vestroia and was the mate to Plezira, another Aquos Bakugan. A dimensional portal opened up and the two fell to Earth where they later came into possession of Sora.

During the events of Gundalian Invaders, Nessie and Lex battled against Linehalt and won. They were later taken along with Sora, to Gundalia by Sid Arcale and brainwashed by Kazarina as soldiers. When Nessie used her Siren Call ability, it broke the hypnotism on Lex who was later able to free her. Soon after, Ren returned to Gundalia to rescue Sora, but asked Nessie and Lex that they not tell Sora about it. They kept their promise and joined the Brawlers to Neathia and became Castle Knights.

He later took part in a two on one battle against Ren Krawler and Jesse Glenn and won.


Bakugan Characters

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