i'm not joining the side of "Nightcrawler can/will beat Hulk" but as someone asked for it, Nightcrawler teleported off 1 guys finger and Deadpool's head during the "Age of Apocalypse" ........ while that may not have been the "prime" marvel universe, the Nightcrawler there had exactly the same powers as regular Nightcrawler....... but was just a tad more brutal
the first name that came to my mind when i read the thread starter was Nate Grey..... as some of you seem to agree i'll stick with it
depending on how you interpret the question though there is one other i would say could definitely beat the Hulk and that's Onslaught..... he was formed by a weird Xavier Magneto thing and was part of Xavier when he was in the X-Men so technically he was on the team...... 😛
Forge claims he can build something to take out the Hulk..... but if we're talking about a no prep physical match he'd be screwed...... i'm struggling to come up with any non-psionic X-Man who would stand much of a chance against Hulk..... what a leech? or the guy who mimics powers..... i don't remember his name but he was in the Wolverine "days of future past" story along with jubilee
I think Havok has enough power to take the Hulk down ...... and Longshot could get lucky i suppose
Franklin Richards sometimes hangs around with the junior X-kids.... does he count?