Mochi is Arin and Suzy's older male pet cat. He is a Napoleon Munchkin Kitten purchased from judyscutiescattery.com. Mochi is two and half years older than their other cat Mimi. Along with Mimi, the cats are often referenced by Arin and Danny during Game Grumps, as they sometimes walk in on them.
For various reasons throughout the show, Barry posts pictures of the cats during the episodes, such as a picture of both cats in Jungle Jangle.
They were both supposedly the final unmet player in the Civilization V playthrough on Steam Train.
On April 1st, 2014, Mochi and Mimi star in Cat Grumps , an April Fool's spin-off of Game Grumps.