Colossus (Piotr "Peter" Nikolayevich Rasputin) (Russian: Пётр Николаевич Распутин) is a fictional superhero appearing in American comic books published by Marvel Comics. Created by writer Len Wein and artist Dave Cockrum, he first appeared in Giant-Size X-Men #1 (May 1975). A Russian mutant, he is a member of the X-Men. Colossus is able to transform himself into metallic form, making him the physically strongest of the team. Even when his powers are not engaged, he is still a physically imposing figure of 6 ft 7 in (200 cm). He is portrayed as quiet, honest and virtuous. He has had a fairly consistent presence in X-Men-related comic books since his debut.…Wikipedia