Prepare for a battle of brains over brawn! In this Pokémon Ultra Moon Hardcore Nuzlocke, we’re limited to Psychic-types only — with no items in battle, strict level caps, and brutal knockout rules.

However, unlike every other Pokemon, there’s no “evolution scene” where you see it transform into its new form. Instead, it’s Tandemaus one second and then Maushold the next.

We already knew the Pokemon was in the game, as they were spotted in last month’s new trailer, however there was no word or even tease of a Mega Evolution for the classic Gen-1 Pokemon.