Phineas Flynn is a boy in the Flynn-Fletcher family, and the 2nd Dimension counterpart of Phineas Flynn. Stuck in an area which is ruled by the evil Doofenshmirtz family, he has grown up without summer vacation.
There are roughly one-sh*t billion tropes so PLEASE look through them before adding one. Otherwise add what you like. ADDITION: PLEASE read through the trope description provided before submitting something. It's not a huge deal but too often people submit characters that don't fit just because they misinterpreted the title...