Read more about It! The Living Colossus at: Wikipedia

Official Site: Marvel Entertainment

It! The Living Colossus (Robert "Bob" O'Bryan) is a fictional character in comic-book published by Marvel Comics. Initially a statue animated by a hostile extraterrestrial, he first appeared in the science-fiction anthology series Tales of Suspense #14 (Feb. 1961), in a story drawn by Jack Kirby (writer unknown). He was revived in Astonishing Tales #21 (Dec. 1973) by writer Tony Isabella and artist Dick Ayers as the protagonist of a short-lived feature, in which he was animated by a wheelchair-using special-effects designer.

It! The Living Colossus debuted in the 18-page science fiction story "I Created the Colossus" in the anthology series Tales of Suspense #14 (Feb. 1961), published by Marvel Comics' 1950s and early 1960s forerunner, Atlas Comics. Penciled by industry legend Jack Kirby and inked by Dick Ayers, and scripted by an uncredited writer, this "Marvel pre-superhero" monster returned for a 13-page sequel story, "Colossus Lives Again", by the same art team, in the by-now Marvel comic Tales of Suspense #20 (Aug. 1961). The two stories were reprinted in, respectively, Monsters on the Prowl #17 (June 1972) and #25 (Sept. 1973).

The character was revived in Astonishing Tales #21 (Dec. 1973) by writer Tony Isabella and artist Dick Ayers, who both drew and lettered the stories. The feature ran four issues, through #24 (June 1974).

Isabella said in 2001 that after the Theodore Sturgeon story "It!" in Supernatural Thrillers #1 (Dec. 1972) had sold well, "Came the word from on high that Marvel should do a regular 'It!' series". Marvel already had an It-like swamp monster in Man-Thing, so, "looking over the sales figures for recent issues of Marvel's giant monster reprint books, we discovered the issues which reprinted the 'Colossus' stories by Jack Kirby [Monsters on the Prowl #17 and 25] sold much better than the other issues which had been published around the same time".

It! The Living Colossus has not been a contender in any CBUB matches.