FusionDex

Dipping Doubeon's scissor-like tail blades into water affects its fighting style and coloration. Hot water makes it more vibrant and aggressive, while cold water dulls its color and makes it battle more methodically.

Doubeon underwent a spontaneous mutation and grew fins and gills that allow them to live underwater. The complex attack patterns of its two swords are unstoppable, even for an opponent greatly accomplished at swordplay.