Timmy's hair was originally intended to be red, but his hair color was dyed so it wouldn't match Vicky's.
Beginning in Too Many Timmys!
When given a wedgie he wears briefs, but in No Substitute For Crazy!
Timmy bites his toenails, which is strange, because he is horrified by bare feet.
Description: He sees a therapist over his crush on Trixie Tang. In some episodes, whenever Tootie tries to kiss Timmy, he either runs away in fear or acquires help from his fairies.