Break Charles Xavier's Neck
Charles is in a chair, the characters have their hands around his head, but Xavier has his head and body sitting upright. Can they break his neck or put him out before he shuts their mind down? They have no resistance to his attack, this is based off of speed. If a character for some reason normally wouldn't be able to or know how, we assume he knows how to do it effectively, by strength or technique. They have to put him out, unconscious or dead by using his head. They could rip his head off if they wanted to. Or smash it.
So who is capable? Not in any particular order.
1. Batman
2. Wolverine
3. Spider-Man
4. Karate Kid
5. Gamora
6. Hercules
7. Namor
8. Iron Man
9. Superman
10. Flash