This list was updated to include more of the most unpopular Cartoon Network series ever and reflect CBR's current style guide. ... After only six episodes, Cartoon Network canceled Brain Rush.

During the early 2000s, Cartoon Network boasted an embarrassment of riches in terms of the volume of high-quality shows on its platform. Cult classic series like Teen Titans, The Powerpuff Girls ...

This led to the start of a cool new block for fans of Cartoon Network in the 2000s as Adult Swim started to air a lot of Cartoon Network classic shows that had not been seen on the network in ...