FusionDex

Though Mewdoom mouths seem small, they can open them wide enough to nearly hold half a watermelon. They create large bubbles to contain gallons of magma, keeping them hot until they're dropped onto an opponent.

In a Mewdoom pack, the one with its horns raked sharply back serves a leadership role. A Mewdoom is said to possess the genes of all Pokémon.