heres the DC side of the coin ......
DC characters
8)Batgirl II (the new one)
Man, that'd be almost impossible, with her ability to read body language. She'd know you're about to try tickling her before probably even YOU'D know you're gonna try it.
Hmm...that'd make trying to tickle her a fun challenge, though.
(oh and the current Batgirl is named Cassandra Caine for those who don't know. )
My fave to tickle, --besides her-- would be:
Catwoman
Wonder Woman
She-Ra (I think there was a comic or mini-comic when the cartoon was around, so I count her as a comic book character..)
Alley Cat...(I think that's the character Alley Bagget is in the Alley Cat comic book. Damn, if only I'd won that "Win a date with Alley Cat " contest Wizard Magazine had years ago, I woulda had a chance to make that actually happen lol)
Cheeta..one of the villans from Justice League....( What can I say..gotta love catwomen. lol)
Hawkgirl (Justice League)...although with her temper, I think I'd keep that electric mace faaaaar away from her before freeing one hand when I'm done tickling lol
Sorceress (MOTU..she looked HOT in the new comic book...and she even had wings. How nice to provide her own supply of feathers. lol)
(and I'd definatley love for Alley, Catwoman, the two Batgirls, Wonder Woman, Hawkgirl and Cheeta to gang up on me for some serious payback when it's my turn to be tied...

)