Ursa Major (comics) become more feral and he begins to lose control over his human intelligence if he remains in his transformed state for several hours consecutively. Ursa Major was trained by the Soviet Military, and trained in the use of his powers by Professor Phobos, being a graduate of Professor Phobos's mutant training school. While transformed, Ursa Major possesses superhuman strength, stamina and resistance to physical injury to a much greater degree than an actual bear of similar size possesses. His strength is sufficient to allow him to engage in a one-on-one battle with The Hulk and survive. His senses are also
Ursa Major (comics) employ of General Tskarov, a communist sympathizer who wanted to undermine American business along the East coast. They only agreed, however, in order to find the missing Darkstar, who (as Ursa later discovered) was in fact being experimented on in Tskarov's own laboratory. Ursa, Darkstar, and Vanguard then joined the Black Widow and Daredevil in defeating Tskarov. Ursa Major is one of the few mutants in the world to retain their powers after Decimation. Ursa Major returns as part of the Winter Guard, helping them and War Machine fight off a Skrull attempt to steal Russian nuclear bombs. Despite orders