April 1, 2000 – A sister channel of Cartoon Network, Boomerang (secondary logo pictured) launches.
April 5, 2010 – Adventure Time, created by Pendleton Ward premieres on Cartoon Network based on the animated short (2010-2018)
April 13, 2007 – Aqua Teen Hunger Force Colon Movie Film for Theaters, a semi-canonical comedy film based on the Adult Swim animated series Aqua Teen Hunger Force was released
April 15, 1994 – Space Ghost Coast to Coast premieres on Cartoon Network (1994–2004)
April 27, 1996 – Dexter's Laboratory, created by Genndy Tartakovsky debuts on Cartoon Network (1996–2003)