League of Super Evil (initialized as L.O.S.E. or LOSE) is a Canadian animated television series inspired by the sketch "Once Were Heroes" by Ryan Harper-Brown, co-created by Philippe Ivanusic-Vallee, Davila LeBlanc, Peter Ricq, developed by Asaph Fipke, and produced by Nerd Corps Entertainment in conjunction with YTV. The series ran from March 7, 2009 to August 25, 2012. Reruns ceased on YTV on September 2, 2014, when Teletoon picked up where YTV had left off. It also aired in the UK on CBBC. League of Super Evil also airs internationally on Cartoon Network and Disney XD.
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