He also has been nicknamed "Cosmo", after discovering a comet in "Bart's Comet". Bart is loosely based on Matt Groening and his older brother, Mark Groening. Even at a young age, Bart has accomplished many feats. He has won an award for his Angry Dad web series  , he has discovered a new comet which was named after himself  , and he also has performed in a successful band with Milhouse Van Houten , Nelson Muntz and Ralph Wiggum. Bart was born on April 1, , where he lit Homer's tie on fire after ten minutes of being born.