SecretAgentBob Charlie's series was created by user SecretAgentBob and became extremely popular online. There are 4 official installments of his series, meanwhile, there were other shorts: one promoting the store Hot Topic and the other two for YouTube Live 2008. Also, recently, SecretAgentBob released another series starring Charlie and the pink and blue called "Charlie teh Unicron", but this is what he believes what "random internet people" would do to the show and is not an official "Charlie the Unicorn" short.
Because of his popularity as a viral video, he ended up as number two in the Annoying Orange Viral Video contest. Cybertoons created the animations in the short. In this short, Orange, Marshmallow, Midget Apple, and Pear (acting like the pink and blue ) try to convince Charlie to go get the pot of gold at the end of a rainbow. They end up on a unstable bridge and because of the weight of Charlie, the foods, and the suitcases Pear and Midget Apple brought along, the bridge collapses. Charlie ended up with a broken leg while the foods were safe thanks to the parachutes in their suitcases. There, they saw two pots of gold since it was a double rainbow. Liam appears claiming that those are his pots of gold. Charlie then yells at the foods and Liam to shut up. After a momentry silence, Orange says "Knife" and Knife cuts into Charlie's other kidney.