Sarah Michelle Gellar

Scooby Doo 3’s Velma and Fred cast!

Robbie Amell and Hayley Alcroft have joined the cast of “Scooby Doo 3″, shooting next month in Vancouver under the directon of Brian Levant.

Amell, best known for his role as ‘Max’ on TVs “Life with Derek”, plays ‘Fred’ in the prequel movie. The Canadian-based actor appeared in last year’s “American Pie : Beta House” and before that, “Cheaper by the Dozen 2″.

Talented newcomer Alcroft, who appeared in “Unfabulous” (2004) with Emma Roberts, plays ‘Velma’ in the movie.

The duo join Nick Palatas (’Shaggy’) and Kate Melton (’Daphne’) for the flick.