I pulled these cards from a repack I'm working on. I didn't have either of them. Donruss MVPs was an insert set found in Donruss for several years.
1988 Donruss Bonus MVP's #16
1990 Donruss Bonus MVP's #6
I always like looking up players I'm not real familiar with on Wikipedia. Here's what I learned. In 1999, he was arrested for trying to buy 33 pounds of cocaine from an undercover agent. He was eventually acquited when his attorney showed that Guerrero's IQ of 70 meant that he couldn't understand that he'd made a deal to buy cocaine. An IQ of 70 means "borderline intellectually disabled".
In 2011, Guerrero got back into baseball as a minor league hitting instructor, and since then has managed several minor league Mexican teams. Just how intelligent do you have to be to manage a baseball team?