Not much is know about this Muay Thai fighter. Judging by the storyboards Sid would have been one of the main characters rather than a boss. He even points out that Carlos is behind everything going on in at least two of the story boards.
Now this one may be a stretch but considering this is the only character that seems to have a Muay Thai fighting style.
|Carlos - Cool - Haiji - Harry - Roche - Taro - Torao - Trigger - Yuiran - Yuiren|
|Jimmy - Lapis - Sid - Snake|