Marvin White

Marvin  is a former member of the Junior Super Friends, and currently an FBI agent.

Physical appearance
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Early life
He completed his training with the Super Friends a long time ago. He didn't put his training to good use, instead, he became a dentist in Pittsburg.

Scooby-Doo! Team-Up
When Velma Dinkley, Shaggy Rogers, and Scooby-Doo needed to be incognito of their investigation of the Rainbow Ghosts at the Hall of Justice, they wore the superhero clothes of Wendy, Marvin, and Wonder Dog, respectively.