Adult Swim is a block on Cartoon Network that started on September 2, 2001. The pilot of The Problem Solverz, Neon Knome, was rejected by Adult Swim in December 2010. Cartoon Network and Mirari Studios retooled it as The Problem Solverz. Adult Swim also rejected the pilot Gumball (a.k.a. Early Reel) for looking too mind blowingly cute in August 2010, which was later re-formatted into a Cartoon Network original series "The Amazing World of Gumball".