Jon

Jon Jafari, also known by his internet name JonTron, is an entertainer and former member of Game Grumps, alongside Arin Hanson. Besides Game Grumps, he is known mostly for his video game top 10s and game reviews.

YouTube and Normalboots
Jon started his show in 2010 with a standard review of the video game Daikatana, but he didn't gain Internet popularity until he retooled the series with a more original style and a fan posted Jon's DinoCity BRO!!! Video on reddit, under the description "This is how a retro game review is done" which gained instant popularity and piqued Arin's interest.

Jon is the co-creator of the now-defunct NormalBoots website, alongside PeanutButterGamer. Normalboots was shut down as YouTube's partner program became a much better way to earn money than ad revenue on Normalboots. Jon has appeared in videos of a fellow NormalBoots member Continue? He has also done many voice overs for episodes of Did You Know Gaming?

Jon started contributing to Channel Awesome in 2011, working on the subdivisions That Guy With The Glasses and Blistered Thumbs.

Jon is also a member of The Game Station.

In July 2012, Jon created Game Grumps alongside Arin. Since starting the channel, Jon's original channel became more popular. Jon originally did the editing for Game Grumps before the job was taken over by Barry.

In June 2013, Jon announced his departure from the Game Grumps, stating that he wished to focus his time and attention on creating more Jontron episodes. (Or as he put it, a "Second Season of The Jontron Show")

Wether or not he will feature in future episodes of Game Grumps is as of now, unconfirmed.

Music
Jon is educated in musical theatre. His musical talent can be heard in his DinoCity video, his Lady Gaga parody, and many times on Game Grumps.