Those were characters not real persons IMHO
“The misconception of Cheech is that he was that Low Rider,” Chong said. “No, in real life he’s a college genius! High IQ, winner of ‘Celebrity Jeopardy.’ He’s a world-renowned art collector. So Cheech borders on genius.”
With that said, Marin said that he never smoked pot while working, whether on stage or on set"