[quote=@Weird Tales]
<Snipped quote by KatherinWinter>

Yeah he's Kryptonian so his body is as susceptible to kryptonite as Superman. Also his parents had him transform lots of times so he has had a while to practice his powers 
[/quote]

Hmmm..... his only 15 though. And he has mastered 13 forms? That's one a years since he was 2!