This is harder than you would think.
You have the ability to state the obvious ... catch ... lack the common sense to not state it. (oh wait, people do that anyway!)
I'll try and think of better ones. LOL
Then you could be codename: Captain Obvious.
You have the mutant ability to seduce/have ANYONE of the opposite sex....catch...you're gay.
According to the 1/2 the posters on CBR, if this is your power, your codename is Gambit. If you can't seduce ANYONE of EITHER sex, your codename is Iceman.
http://www.youtube.com/watch?v=BU7Wds7olrc
Although if its someone like Johnny Cage… then no harm done
Remember when everyone was up in arms with how violent this game was? Now it's just cartoonishly silly. If you have this power, I think your codename would just be: ROD.
Just teasing! Sorry, r0d!
Okay.
So you have the power to change the properties of an object into another form of matter by touch, (ie changing lead to gold)...but you have to touch the object with your nipples.