Cartoon Network/How to Train Your Dragon (2010)

Cast

 * Ben Tennyson (from Ben 10) as Hiccup Horrendous Haddock III
 * Dee Dee (from Dexter's Laboratory) as Astrid Hofferson (they both have blonde hair)
 * Samurai Jack (from Samurai Jack) as Fishlegs Ingerman (I know Samurai Jack is skinny)
 * Adam Lyon (from My Gym Partner's a Monkey) as Snotlout Jorgenson (I know Adam Lyon has orange hair)
 * Robin (from Teen Titans) and Numbuh 3 (from Codename: Kids Next Door) as Tuffnut and Ruffnut Thorston
 * Gumball Watterson (from The Amazing World of Gumball) as Stoick
 * Eddy (from Ed, Edd, n Eddy) as Gobber