Lupo is one of Magneto's first Savage Land Mutates, and has been involved in all the Mutates' subsequent activities. Presumably, Lupo remains with the Mutates in the Savage Land.
Lupo posesses the ability of Zoopathy thia allows him to summon and control mammalian carnivores, especially wolves. This ability has a range of one mile, but Lupo must make a series of high-pitched cries to obtain this range.
Lupo was created by Roy Thomas and Neal Adams in 1969 and first appeared in X-Men # 62.