Henry "Hank" McCoy aka Beast is a former scientist and political activist who transformed into a frightening looking mutant with blue skin and sharp teeth in an attempt to cure himself, but is kind at heart. Despite his inhuman appearance, he is a brilliant man of the arts and sciences; he is a world authority on biochemistry and genetics, the X-Men's medical doctor, and the science and mathematics instructor at the Xavier Institute (the X-Men's headquarters and school for young mutants). He is also a mutant political activist. Fighting his bestial instincts and fears of social rejection, the Beast dedicates his physical and mental gifts to the creation of a better world for man and mutant. He also has a witty sense of humor.
In X-Men: The Last Stand, he was played by Kelsey Grammer, and in X2, Steve Bacic portrayed him in a very brief cameo in a newscast scene as a human. Nicholas Hoult will portray a younger version of Beast in the 2011 film, X-Men: First Class.
Powers and Abilities
It is possible that Beast's mutation is a result of genetic atavism. However, he also possesses neotenous characteristics, which may explain him having a super genius intellect despite his animal physique. He possesses also superhuman strength, speed and agility. He is an excellent hand-to-hand combatant, employing a unique style of acrobatic combat, from combat training he received at Professor Xavier's and coaching from Captain America.
Anthropoid/Simian physique (seen in X-Men 3)
Originally, Hank McCoy retains the basic features of a normal human alongside a generally simian physiology (e.g., elongated limbs and enlarged extremities) equivalent to that of a Great Ape. This mutation gives him superhuman strength, speed, reflexes, agility, flexibility, dexterity, coordination, balance, and endurance. He is equally dexterous in all four limbs; able to perform tasks with his feet or hands with equal ease. Because of his talents and training, Beast can outperform any Olympic-level athlete, contorting his body and performing aerial feats gracefully. Later, Hank mutated further (from drinking an experimental solution), first through the growth of grey - then blue - fur covering his entire body. He gained claw-like nails and fang-like teeth, and his overall appearance became more bestial. With this physique, Beast used his claws to climb vertical surfaces (though, he has been depicted performing this feat prior to his furry transformation). Beast gained the ability to emit mood altering pheromones, causing sexual attraction in women, and he became strong enough to withstand falls that would crush the bones of a normal human. Beast developed extremely powerful limbs, allowing him to make astounding leaps and to run at great speeds for a short duration. Prior to restoring this form, Hank McCoy had returned to his humanoid/simian form but as a result he began losing his intellect but also increasing his physical strength as a result of this process.
Feline physique (seen in X-Men: First Class)
After being critically wounded, Hank's body undergoes a secondary mutation, jump started by Sage. The result is a more feline appearance equivalent to that of a big cat. His strength, speed, stamina, sturdiness, and senses increase further with this change. He gains cat-like agility, flexibility, coordination, and balance, and all his senses are enhanced to twenty times that of a normal human being. In addition, Beast develops an accelerated healing factor that allows him to repair mild to moderate injuries within the span of a few hours. Following the X-Men's relocation to San Francisco, Beast discovers that he had regained some of his old manual dexterity. In the first issue of Warren Ellis' Astonishing X-Men run, Beast also comments he no longer needs full sleep.
Genius intellect
Hank possesses a brilliant intellect. He is a world-renowned biochemist, having earned a Ph.D. in biophysics and genetics. He frequently functions as both field medic and in-house physician for the X-Men, despite not technically having an MD. His intelligence and expertise in genetics rival that of Professor X, Moira McTaggert, and Kavita Rao. Despite this, he has never received a Nobel Prize or been elected to the United States National Academy of Sciences. A Renaissance man, McCoy is well-versed in many fields including languages (fluent in English, German, French, Latin, Spanish, Japanese, Arabic, and Russian), literature, philosophy, psychology, and sociology, history, art and art history, anthropology, linguistics, and music, as well as in political science and economics with a special affinity for science and technology and a penchant for quoting literary classics. His vast scientific knowledge ranges from theoretical physics, quantum mechanics, differential equations, nanotechnology, anatomy, biomedicine, analytical chemistry, electrical engineering, and mechanical engineering to the construction of a hyper-magnetic device. An electronics expert, he often repairs Cerebro and makes upgrades to the Danger Room settings.