Recently Summit realsed the official Eclipse Cast list. Boo Boo Stewart will be playing the role of Seth Clearwater. Seth is mentioned in New Moon but becomes a part of the were-wolf pack in Eclipse. is Also joining him in the pack is his older sister, Leah Clearwater who will be played by Julia Jones The main part he has in Eclipse is when they are getting ready to fight the newborn vampires, and near the end of the entire fight, Seth helps Edward kill Victoria(Bryce Dallas Howard) and Riley(Xavier Samuel) I Think he fits the young age for Seth, although he sint exactly how i pictured Seth to be, he could do a good job. What do you guys think?