Ben 10 vs Alien Grendel

Ben 10 vs Alien Grendel is the crossover between Ben 10 (2016) and Be Cool, Scooby-Doo.

Plot
Mystery Inc. meets the hero Ben Tennyson, who asks for their help to solve the mystery of the monster called Alien Grendel.

Cast
Frank Welker - Scooby-Doo, Fred Jones

Matthew Lillard - Shaggy Roggers

Kate Micucci - Velma Dinkley

Grey DeLisle - Daphne Blake