- Main article: Washington family
Marvin's parents are Ed and Elaine. He has two siblings, Tamika, and a so far unheard older brother, Antoine, who is away at college. Their cousin Xavier lived with them because his mother was having some hard times. Also living with his family now is Kelly, a girl they've taken in as a foster child.
Marvin takes piano lessons, but the keyboard 'fails to inspire him' and his true love is playing the drums. He even once started a band in The Coolest Dog with Tamika, Wooton, and his best friend Trent DeWhite. This band has never been seen, although Tamika mentions in Odyssey Sings! that she's been "singing for her brother's garage band,". Marvin also claims to be the 'Fund-raising Master', saying he could sell a light bulb to a bat. In A Capsule Comes to Town he works with Harlow Doyle.
See, Washington quotes.