The Nostalgia Critic is a minor character in the SMG4 series. He is a critic who reviews bad (and even good) movies and TV shows. He is based on the fictional character of the same name played by the actor and YouTuber Doug Walker.
Nostalgia Critic appears in SMG4's random 21st Century Humor Gorilla meme.
Nostalgia Critic appears among the panicking losers of the YouTuber Tournament.
The Critic makes his debut as a major character in this episode, where Tom Nook hires multiple Nostalgia Critics to review-bomb Mario and Bob Bobowski's hotel. Mario, Bob, and the rest of SMG4's Gang battle them, but are easily overpowered. Mario and Bob manage to defeat them by offering them a free stay in the hotel.
Multiple Nostalgia Critics are seen in the background while SMG4's Gang discuss their childhoods.
Bob shows off his advertisement for the Bob n Breakfast 2 where the Nostalgia Critics gave the hotel a 5 star rating until the AVGN called them a poopyhead and enraged them.
He is one of the many memes SMG4 and SMG3 uses to make a bridge.
Rob fills his hotel room with corn which attracts Rats to the hotel and causes it to shut down due to health violations.
- After the release of SMG4: Mario's Bed and Breakfast, Doug Walker has acknowledged Nostalgia Critic's appearance in the video on a YouTube comment from Channel Awesome and in a short skit on Channel Awesome's social media.