The Mediocre-ist is a look as to what the show would be like if Greg and Jirard had switched roles. As Greg is known to generally be bad at video games, he rarely 100% completes the episode's spotlight game. In addition, he also does little to no research of the game. The main focus of these episodes is based around Greg's supposed incompetence of games, which is used to enhance the comedic effect of the show.
The show is set up in the same way as a Completionist episode, except instead of there being different "levels," Greg just gives his opinions about the game on each topic.
Introduction of the Mediocre-ist!Edit
Greg introduced the Mediocre-ist at the end of the Super Meat Boy review after Jirard completed the game. In honor of Jirard's (fake) death, he dubbed himself the Mediocre-ist. This also was the first time that Greg's Intro was seen.