Lloyd- Can hop and balance on one leg for an entire day

Jay- Can touch his nose with his tongue

Nya- Can do the cartoonish thing of balancing things on her head, legs and arms (which is actually confirmed in the show in the training episode in S5)

Kai- Can stay awake for so damn long it's uncanny

Cole- Can get his own season after 12 seasons of waiting

Zane/Pixal- They're both self-taught ambidextrous.

Skylor- Can use two pairs of chopsticks at once.

Wu- Just the fact that he can do martial arts at this age is a talent.