Originally posted by TricksterPriest
Dude, Moondragon couldn't get into his mind with the mind gem. He one-shotted her in a TP battle. He is certainly over Xavier.
Moondragon can't get into his mind with the Mind Gem because Warlock put restrictions on the gems so they wouldn't work against other members of the Watch.
Not agreeing with one side or the other. Just wanted to point that out.
Thanos has displayed telepathic abilities in the past, most notably before his death. In fact, the Loose-leaf update of the HBOTMU states that Thanos possesses psionic abilities.
This ability is typically innate among the cosmic Eternals, but not always so among the Titans
The level of Thanos' telepathic prowess is unknown. It was presumed to be at a low level. When he decided to make a move against the Goddess during the Infinity Crusade, he employed the aid of Professor Charles Xavier to utilize his telepathic abilities. It bears mentioning that Xavier is ranked as arguably the most powerful psionic on Earth, and likely ranks among the top Psionics in the known Universe
Despite the presumably low level at which he is able to gain telepathic egress into another's mind, Thanos is a formidable psionic combatant, having shown prowess sufficient enough to defeat both Drax and Moondragon in mental combat. While willpower isn't a quality that can be easily measured...Thanos' force of will is the equal of anyone's.