Jean Grey/Phoenix Force- telepathy, telekinesis, but as the Phoenix Force she has the ability to travel through space and time, ability to psionically manipulate matter and any energy form, and ability to create powerful "cosmic" fire
The brawd basically can control read and destroy shit with her mind and doesn't even have to lift a finger. I don't understand why Marvel doesn't do her more justice she should get her own Origins film too I know she isn't as popular as "Wolverine" but she is much more powerful.
Nate Grey/X-Man- telepathy, telekinesis, psychometry, precognition, ability to exist as living psychic energy, and cross dimensional travel
Much like his mother can basically destroy shit with his mind and he can many cases read you thoughts before you even have them. Someone like him would be almost unbeatable in a battle.
Cable does basically the same thing as Nate Grey
Mr. Sinister- Super human strength, durability, longevity, telepathy, telekinesis, molecular manipulation, and genius level intellect
The Hulk and Red Hulk- Superhuman strength, stamina and durability; healing factor; energy absorption; intelligence, and heat generation
Marvel has a lot of other over the top characters as well, but these were a few that immediately came to mind for me.