Kid Rey was a minor character -- a villain and drug dealer in Lean on Me.
He was played by Alex Romaguera (this was his only role to date).
In the beginning we see him selling drugs. He fought a lot. He didn't follow the rules. He was friends however with the principal. But he did questionable and bad things. He is a tragic villain -- who quits school to work for a crime synidicate. It's a shame cause he was really a good guy who got consumed by vices.