Nostalgia Critic

Origin
The Nostalgia Critic is the most popular video series created by Walker, as well as one of his first. Usually, it involves him on camera critiquing entertainment from the 80's and 90's, although a couple of videos will also target modern popular culture as well. His catchphrase which usually opens and ends each video is "I'm the Nostalgia Critic. I remember it, so you don't have to." The first video was a high-speed, adrenaline-like review of of the 2007 film version of Transformers. Unlike the future videos, this review is more positive. His trademark black hat and suit jacket appear in the video, but the red tie and white shirt did not appear until his review of Mighty Morphin Power Rangers: The Movie. Walker's other major character, Chester A. Bum made a special appearance in the Follow That Bird review.

Mario & Friends Save Youtube Poop 5
The Critic made a few special appearances such as when I.M. Meen uses his headbutt attack. And appears again when Captain Shang says "Why should I give a shit!..."