It’s been so long, either a Mega Juicer or Titan Juicer from RIFTS. https://rifts.fandom.com/wiki/Juicer . Essentially a steroid user but with super science. Massive person. Think Strong Guy from X Factor https://en.wikipedia.org/wiki/Strong_Guy . He loved western wear, but often got into situations where mega damage would destroy his outfit, so he had cargo crates full of the same black cowboy hat and duster. He became a juicer to save his sibling, they were both poor kids and sibling needed medical help, so he answered an ad for experiment subjects.