Eeceus's unstable genetics make it extremely susceptible to evolution at any time in any environment. The gemstones on its gate glow brightly when it is about to evolve, differing in color depending on what it will evolve into.
It is described in mythology as the Pokémon that shaped the universe with its 1,000 arms. An Eeceus has an unstable genetic makeup that suddenly mutates due to its environment.
