‘What is worse than demons? Demons on skates!’
Demonica is a 2014 American comedy horror feature film directed and edited by Jason Bolinger and Insane Mike Saunders (Collapse) from a screenplay written by the latter and Chris Simmons. The Prescribed Films production stars Linnea Quigley, Joseph Roark, Katie Lynn McDowell and Daniel Hampel.
Plot:
In 1986, a group of teenagers decide to have one hell of an after-hours party at the local skating rink. Little do they know that their party is going to be crashed by hellish creatures—creatures released from a necklace possessed by an ancient evil.

Now the kids must choose to either save themselves, or risk certain death in a human versus demon roller derby battle to save the world.
They’re about to find out that the only thing worse than demons, is demons…on skates!
Cast and characters:
Linnea Quigley … Gypsy Woman – Clownado; Bonehill Road; The Barn; Witchtrap; Night of the Demons; Creepozoids; Return of the Living Dead; Silent Night Deadly Night; et al
Joseph Roark … Richard Tenney
Katie Lynn McDowell … Laura (as Katie McDowell) – Dead Awake (2010); Sons of Perdition
Daniel Hampel … John
Alicia Bricker … Monica / Demonica
Sam Garles … David
Cassie Heller … Sara
Elizabeth Dehne … Wendy
Leah Morrissey … Terri
Mark Burk … Mr Tenney
Jill Emmert … Julia
Mikeal Burgin … Stranger
Dustin Neill … Samuel
Nalani Proctor … Rebecca
Paul Huyck … Bartender
Trailer: