Oooh it smacks fun!

Scooby Doo:

Fred: Our esteemed Mr. Dovetonsils (he'd look dashing with an ascott)

Daphne: LovelyLovely (name says it all)

Velma: Jmcc. (undeniable intelligence and rational thinking)

Shaggy: Coffeebot (I just want to hear him say "ZOINKS!")

Scooby: CheerfulHamster (for having the excellent acting coach, Nor Dog Witch Her of brown)

Evil Villain: Lord Fahruz (every great protagonist needs an equally talented counterpart)

The Suspicious Caretaker: our engrishwebmeister, YOOM (an air of mystery and suspicion surrounds him but he always ends up innocent)

Glowing eyes: Any number of missing persons (you're pretty sure they're watching but never quite see them)

Look at the sushi with fine look. Oooo looks delicious!