Michael Williamson is the titular and supporting character of the Willie and Michael comic and animated series.

Michael is mature, shy, and witty. Michael has a small group of friends in school but Willie is the only 'cool kid' that hangs with him; Michael is an introvert. Michael and Willie have been best friends since preschool. Michael is oftentimes bullied by his peers due to his effeminate personality; Willie protects him like a brother. Michael is two months younger than Willie.

Michael is a rabbit humanoid.

Mike's birthday is March 3rd.

Michael's first public appearance was on the Willie and Elmore show's short "Science Room" in 2011.