Deadpool's primary power is an accelerated healing factor, depicted by various artists and writers with varying levels of efficiency. Said healing factor, which was artificially endowed by the Weapon X program, enables him to regenerate any destroyed tissues or organs at a super-human rate. An unanticipated side effect of the therapy was a rapid acceleration of the cancerous tumors he was suffering from at the time as well, causing them to quickly spread across his entire body as soon as his powers fully activated. Because of this, his healing factor super charged his cancer, resulting in massive scar tissue causing his appearance to be severely disfigured. Deadpool's brain cells are similarly affected, with dying brain cells being rejuvenated at a super accelerated rate. While this allows Deadpool to recover from any and all head wounds, it is also the cause of his psychosis and mental instability, and it renders him nearly invulnerable to psychic and telepathic powers, as the altered (and thus damaged) brain cells quickly regenerate to their original state. Deadpool's healing factor is strong enough that he has previously survived decapitation more than once, though in each of these occurrences, his head had to be reunited with his body to heal the wound instead of his body growing a new head (or vice-versa). Unlike Wolverine’s natural healing factor, Deadpool’s is mentally driven to a partial extent. Similar to Wolverine, his healing factor also affects a number of his physical attributes by increasing them to superhuman levels heightening at least his endurance and stamina. Though it had been said in earlier years that he also had super-human strength, that detail has apparently been glossed over, if not forgotten, as of late. Deadpool's body is highly resistant to most drugs and toxins. For example, it is extremely difficult, though not impossible, for him to become intoxicated. He can, however, be affected by certain drugs, such as tranquilizers, if he is exposed to a massive enough dosage. As for alcohol, it appears that while he is capable of getting drunk, just like Wolverine, it takes massive amounts and the effects quickly wear off. Deadpool's healing factor also provides him with an extended lifespan by slowing the effects of the aging process to an unknown degree which cannot be measured as of yet, since he is, naturally, not old enough to see any effect. However, his life span is, apparently, extended to such a degree, that he is still alive as Deadpool 800 years from the present as shown when the new X-Force encountered him in the future.
Aside from his physical advantages, Deadpool is a superb assassin and mercenary, an expert in multiple forms of martial arts, an expert swordsman and marksman, and has been said to have enhanced physical strength. It has also been discussed that, while his psychosis and dissociative identity disorder is a handicap, it is also one of his greatest attributes as it makes him an extremely unpredictable opponent. Taskmaster (who has Photo-Reflexive Memory which allows him to copy anyone's fighting skills by observation, thus making him their equal in battle) was unable to defeat Deadpool due to his chaotic and improvised fighting style. Over the years, Deadpool has owned a number of personal teleportation devices. Also, during Deadpool's first ongoing comic, he possessed a device which projected holographic disguises, allowing him to go undercover or conceal his appearance. In addition, Deadpool is multilingual and has demonstrated the ability to speak German, Spanish, and Japanese. Occasionally, Deadpool has also been shown as having a magic satchel, often pulling weapons out of nowhere.
http://en.wikipedia.org/wiki/Deadpool
Predators are physically distinguished from humans by their greater height, arthropod-like mandibles and long, hair-like appendages on their heads that are set into their skulls. Their bodies are resilient to damage, capable of recovering from multiple gunshot wounds and radiation doses which would be fatal to humans. They are much stronger than humans, having been portrayed as being easily capable of outmatching a conditioned adult human male and shattering solid concrete with their bare hands. They are also skilled climbers, and will readily move through trees or across rooftops in pursuit of prey. Though capable of surviving exposure in Antarctic temperatures for an extended period of time, it is implied that Predators have a preference for hot equatorial climates. Their blood is luminescent phosphor green in color. Their vision operates mainly in the infrared portion of the electromagnetic spectrum; they can easily detect heat differentials in their surroundings but are unable to easily distinguish among objects of the same relative temperature. A Predator's hunting helmet increases its ability to see in a variety of spectrums, ranging from the low infrared to the high ultraviolet, and also filters the ambient heat from the area, allowing them to see things with greater clarity and detail. While they are capable of breathing Earth's atmosphere, the creature in Predator 2 is seen using a breathing mask after losing his helmet. Their dietary habits are also mentioned in Predator 2, where it is revealed that the creature regularly visits a slaughterhouse every two days to feed on the stored meat there.
http://en.wikipedia.org/wiki/Predator_%28alien%29#Characteristics
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