Gabrus is best known for hosting MTV's teen game show, The Substitute. Last year, he hosted the Comedy Central pilot, Highdeas and Gabrus on Rugby for BBC-America. Jon has written for Spike TV Video Game Awards, College Humor, Atom, Friends with Benefits, and among others. He is also a internet sensation as he can be found in videos on Funny or Die and College Humor.
- He is also one of the cast members to also star on Guy Code.
- He has appeared in 6 episodes of Season 6 , 6 episodes of Season 7, and 3 episodes so far in Season 8.
- his final season was season 8