Doraemon

I first starred in a humorous children's manga (later a TV-series) about a boy named Nobi Nobita who is so unlucky, weak and lazy that his descendants had to send the family robot back in time to help him out. That robot is yours turly Doraemon and my four-dimensional pocket produces any number of futuristic gadgets and devices meant to help Nobita become something other than a complete failure in adulthood.