Buttman

Buttman is a speedrunner with an Australian accent that Justin often embodies.

Appearances include:

Creating The Sequel To Dogs in Spore as Buttman42

Reviving The Shrek Franchise With Spore as Buttman69

Throwing Everyone in Dragon's Dogma Off a Cliff as Bonzoboy69 and Dingoman73(might be different speedrunners) and as Buttman49

He also appears in Stardew Valley for Beginners: How I Found The Fun as Batman19