Hmm. Well, Flonne technically isn't a teen, though by using wacky game logic, her age of 1500...something makes her basically like the supernatural equivalent to a teen. The concept of Flonne actually becoming a costumed hero is so amazingly hilarious I am not sure why I didn't think of it myself. She might be something of an embarrassment to the others acting so stereotypical, but that'd be half the fun!