Grumpy

Grumpy is a pet obtainable from the yellow Petball at the Spawn, with a 62.99% chance of obtaining. It evolves into Grumpyter.

Biology
Grumpy is based on a boulder. It has an upset face with black eyes. It also has multiple cracks going through it.

Moveset
The battle system isn't out yet, but based on it's description, it will know an attack called "Knockout."