 The Disney Channel promos for "Phineas and Ferb" describe him as someone who "thinks big", refusing to let any day be ordinary.Povenmire also characterizes him as assertive, someone so secure in his abilities that others assume he is a prodigy.Povenmire and Marsh wanted the series to reflect their own childhood memories of going out during the summer and have fun, digging trenches and building tunnels, forts, and tree houses.