Steve YouTube

Steven "Steve" YouTube is a major character but eventually chief antagonist of Smosh: The Movie.

Smosh: The Movie
When Anthony Padilla and Ian Hecox come to YT to ask for an embarassing video of Anthony to be removed from the video-sharing site before Anthony's high school crush sees it, Steve YouTube insists that "once a video is put in the internet, it will be there forever". He offers them the only possible option: "to enter Youtube itself and change the video from the inside". He gives them two mobile phones with Diri (parody of Siri) to help them navigate Youtube before entering the portal to the website resembling a door with a blackhole inside.

The two navigates through a series of YouTube, one of it was a video by Jenna Marbles, where they learnt that Marbles also entered YouTube itself but was trapped in it after her own phone ran out of battery. After Padilla and Hecox managed to change the embarassing video, it was revealed that Diri is being voiced by Steve himself who vows that the two will remain trapped forever in Youtube.

The duo suggested looking in their viewing history to find the portal back to the real world. Steve, who is determined to not let the two escape, tries to delete their viewing history, took over the bodies of some YouTube video characters, and later entered YouTube himself meeting them in an advertising video where the Smosh duo first arrived. Mr. YouTube was later attacked by a bear behind and the two escapes to the portal back to reality. Mr. YouTube was assumed to be trapped inside of YouTube and at least seriously injured from the bear's attack.

The Smosh duo find out that they successfully altered reality and they now lived in a mansion. Mr. YouTube arrived at their doorstep to deliver pizza. He became a pizza delivery guy as the result of the alteration in the timeline. He insists that his name is pronounced "yootoobay". This was his last known role in the movie and was unknown if he survived or not.

Trivia

 * The only video in that he appears in is "SMOSH: THE MOVIE (OFFICIAL TRAILER)".