.Stewie does the i know what im doing, brians is the more sarcky.Brians my fave but stewie does more unbelievable stuff like build time machines in his bedroom i suppose it would have to be stewie sorry brian.
stewey is funner then brain because 1 of their epesiode stewey shut when the door closed.then he got drunck and got a pirced ear and he tryed 2 sut brian