Sniper
The Sniper trilogy kicked off in 1993 with the first movie in the series Sniper. In 2002 a second film was released staring Tom Berenger, Bokeem Woodbine, Erika Marozsán, Tamás Puskás, and in 2004 the series was completed with Sniper 3
Ginger Snaps
The Ginger Snaps trilogy kicked off in 2000 with the first movie in the series Ginger Snaps. In 2004 a second film was released staring Emily Perkins, Brendan Fletcher, Katharine Isabelle, Tatiana Maslany, and in 2004 the series was completed with Ginger Snaps Back
Private Gladiator
The Private Gladiator trilogy kicked off in 2001 with the first movie in the series Private Gladiator. In 2001 a second film was released staring Toni Ribas, Frank Gun, Rita Faltoyano, Mandy Bright, and in 2001 the series was completed with Private Gladiator: Sexual Conquest
The Godfather
The The Godfather trilogy kicked off in 1972 with the first movie in the series The Godfather. In 1974 a second film was released staring Marlon Brando, Al Pacino, James Caan, Richard S. Castellano, and in 1990 the series was completed with The Godfather Part III
Street Fighter
The Street Fighter trilogy kicked off in 1995 with the first movie in the series Street Fighter II: The Animated Movie. In 1999 a second film was released staring Kôjiro Shimizu, Kenji Haga, Miki Fujitani, Masane Tsukayama, and in 2005 the series was completed with Street Fighter Alpha: Generations
High School Musical
The High School Musical trilogy kicked off in 2006 with the first movie in the series High School Musical. In 2007 a second film was released staring Zac Efron, Vanessa Hudgens, Ashley Tisdale, Lucas Grabeel, and in 2008 the series was completed with High School Musical 3: Senior Year
Batman: The Animated Series
The Batman: The Animated Series trilogy kicked off in 1993 with the first movie in the series Batman: Mask of the Phantasm. In 1998 a second film was released staring Michael Keaton, Jack Nicholson, Kim Basinger, Robert Wuhl, and in 2004 the series was completed with Batman: Mystery of the Batwoman
Harold & Kumar
The Harold & Kumar trilogy kicked off in 2004 with the first movie in the series Harold & Kumar Go to White Castle. In 2008 a second film was released staring Cuba Gooding Jr., Spencer Breslin, Nikki Blonsky, Ally Sheedy, and in 2011 the series was completed with A Very Harold & Kumar 3D Christmas
The Expendables
The The Expendables trilogy kicked off in 2010 with the first movie in the series The Expendables. In 2012 a second film was released staring Sylvester Stallone, Jason Statham, Jet Li, Dolph Lundgren, and in 2014 the series was completed with The Expendables 3
The Sandlot
The The Sandlot trilogy kicked off in 1993 with the first movie in the series The Sandlot. In 2005 a second film was released staring Max Lloyd-Jones, James Willson, Samantha Burton, Brett Kelly, and in 2007 the series was completed with The Sandlot: Heading Home