He stopped by for pictures and offered some words of wisdom.
Danny Trejo toured Corcoran State Prison last week.
Trejo had a meet and greet with hundreds of inmates -- signing autographs and taking the time to chat one-on-one with some of them.
Trejo also thanked the inmate volunteers in Corcoran, who recently raised and donated $5,400 to a non-profit that supports struggling California youth.