Tickle-U is a defunct weekday morning preschool programming block that aired on Cartoon Network (and, for a brief time, on sister channel Boomerang), featuring domestic and foreign-imported series targeted at preschool-age children; it, like competitors Nick Jr. and Playhouse Disney (now Disney Junior) existed on account of Cartoon Network's primary audience of children and teenagers attending school during the block's airtime. The hosts were two animated CGI characters: a red caterpillar named Pipoca (voiced by Ariel Winter), and a green rabbit-like creature named Henderson (voiced by Tom Kenny).