When the Stardust rain reached the mountain region of Monster Legends, it showered Cryotan and Ouros with its Cosmic magic. As it’s so cold up there, the Stardust slipped through cracks of these mountain monsters and crystalized too quickly, breaking their rocky surface and causing a landslide. The rubble of stone and Stardust crashed down the mountains and onto the bottom of the ocean, where it gave birth to a Cosmic monster: Seaquake.

Seaquake is a Water Tank, Immune to Control, who can Torture his enemies with effects like Drowned or Quicksands. He can also protect himself with Aquaphobic Shields, lose negative effects or Heal himself and regain Stamina. Seaquake has an Evolving Trait: at rank 0, he's Immune to Stun, at rank 1, he gains Immunity to Freeze and, at rank 3, he becomes Immune to Control.