who does the voice of sully in monsters inc
John Goodman.
Monsters, Inc.
 The voice role of Sulley went to John Goodman, the longtime co-star of the comedy serie
wiki:13594184
Monsters, Inc. [SEP] Casting
Bill Murray was considered for the voice role of James P. "Sulley" Sullivan. He screen tested for the role and was interested, but when Pete Docter was unable to make contact with him, he took it as a "no". The voice role of Sulley went to John Goodman, the longtime co-star of the comedy series "Roseanne" and a regular in the films of the Coen brothers. Goodman interpreted the character to himself as the monster equivalent of a National Football League player. "He's like a seasoned lineman in the tenth year of his career," he said at the time. "He is totally dedicated and a total pro." Billy Crystal, having regretted turning down the part of Buzz Lightyear years prior, accepted that of Mike Wazowski, Sulley's one-eyed best friend and scare assistant.