Warren GraffWriterFilmography (5)Happy Tree Friends- Winter Break (2004, ★ 7.5)Happy Tree Friends (1999, ★ 7.8)Happy Tree Friends - Mole in the City (2005, ★ 7)Sonic Boom (2014, ★ 7.4)Happy Tree Friends: The Movie (2006, ★ 5.9)