And since you mentioned Avatar, can someone please explain why he has an arrow on his head? And how don't other kids write "stupid here" on his forehead or something. :I
Cause I totally would do that.
He's what's called an air nomad and when air nomads have shown they mastered airbending they are marked with the arrow tattoos on their forehead and body. http://avatar.wikia.com/wiki/Air_Nomads
And yeah that's Toph in Mac's theme. And yeah's she's only 12 in the original series.