And David is...

THE SNOW SWORD
Your Superhero Name is The Snow Sword
Your Superpower is Seduction
Your Weakness is Glitter
Your Weapon is Your Flame Bombs
Your Mode of Transportation is Snowboard

All of this is spot on for David, and here's a bit of TMI that he's probably very proud of... he has some serious weapons of mass destruction with his Flame Bombs. Yes, it's what you think it is.

Seduction :) check. And now I know his weakness. Either this means I need some glitter body lotion, or his weakness is a stripper named Glitter. Hmmmm, I'm going to get my body lotion either way.