Steve YouTube

Steve Youtube is a character in Smosh: The Movie where he is the CEO of the video-sharing site YouTube. He is later to be revealed as the main antagonist of the film.

Role in the film
When main movie protagonists,Anthony Padilla and Ian Hecox came to Youtube 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 the two, 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 videos, 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 sucessfully 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 "yoochubey". This was his last known role in the movie.

Personality
At first glance, he seems to be a serious no-nonsense businessman. Although it is immediately revealed that he has a naughty side, when he tricked Anthony and Padilla into viewing his wiener when he lied to them that the portal to Youtube is right under his desk. He also seem to troll the two through Diri during the duo's misadventures inside Youtube such as when he deliberately mishear the instructions given by the two, expressed jealousy if Anthony expressed preference over his girlfriend over Diri, and wants to provoke a fight between the two, when Mr. Youtube urged the two to fight during a misunderstanding. He is also bent to trap the two inside Youtube like what he did to Jenna Marbles. It is not clear what are his reasons for doing so. He retained his naughty personality even after he became a delivery guy due to changes in the timeline.