Allies...
He made team in Secret Defenders #12 with Geatar, Nitro, TItanium Man, Rhino, Super Skrull.
Durability...
Thanos' durability is perhaps his greatest physical asset. Before his resurrection at the hands of Mistress Death, Thanos was an extremely tough nut to crack. He once fought the Magus to a standstill, and displayed no injuries after being knocked down. In a later battle, he withstood the combined assault of the Thing and Thor with no apparent injury. His durability is somewhat abnormal among Titanian Eternals, but not unique among Earth Eternals.
Strength...
In his battles, Thanos has displayed not only his awesome durability, but also staggering physical strength. Impressive degrees of physical strength are the norm with Cosmic Eternals. The former leader of Earth's Eternals, Zuras, possessed physical strength at the level of superhuman class 50, as does the current leader, Ikaris. The most physically powerful of the Earth Eternals was a being that went by many names over the course of his long life, including Samson, and Gilgamesh. He was commonly referred to as the Forgotten One due to his former status as an outcast. The Forgotten One posessed superhuman strength in the class 100 range.
Stamina...
Like other cosmic Eternals, Thanos is sustained by cosmic energy. No amount of pure physical exertion can tire him because his metabolism is sustained by this energy. Only sustained usage of cosmic energy can tire him appreciably.
Speed/Agility...
Thanos' reflexes and speed are above normal human levels. While not able to compete in this area at the level of speedier, more agile heroes like Spider-Man, Thanos is far faster than a being of his size ( 6'7" in height, 985 lbs of mass. ) should have a right to be.
Psionics...
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.
Teleportation...
It has been theorized that Thanos possesses the innate ability to teleport himself over unknown distances...however the final answer is an inconclusive one. It is true that most cosmic Eternals possess the ability to teleport themselves and others psionically. Most Eternals find the process an unpleasant one, and usually prefer not to use the ability unless absolutely necessary.
Energy projection/manipulation...
Thanos has displayed great versatility in the use of his energy projection powers. Not only is he able to project energy as a concussive force, but he's also able to use the energy to form force-shields, concussion waves, gamma radiation bursts, infrared heat-beams, and disruptor beams. His chief uses of the cosmic energy he draws upon are in the forms of disruptor beams from his eyes, and concussion blasts from his hands.
Matter manipulation...
Thanos may not be as accomplished in this area as others, such as the Eternal named Sersi, but he definitely is able to manipulate matter on the atomic level. He displayed this ability in one of his initial appearances when he turned the Skrull, Skragg, into stone.
Transform the skrull intro stone.
Bionics...
As has been discussed, aside from using mystic means to augment his might, Thanos also used technology as well. The exact nature of the bionic implants he formerly possessed is unknown.
Invisivle Shield.
