"Lost in the Devil's Triangle, trapped in a dimension with beings from the future and from other worlds, a party of adventurers journeys through zones of time back to their own time. Varian, a man from the 23rd century, possessing awesome powers. From 1977, Fred, a young doctor just out of medical school. Scott Jordan, the 13-year-old son of a famous scientist. Liana, daughter of an Atlantean father and an extraterrestrial mother. And Jonathan Willaway, rebel scientist from the 1960s. Together they face the frightening unknown on... the fantastic journey."

"Teri Polo — Christine Daaé/Belladova"

"Charles Dance — Erik/The Phantom of The Opera"

"Burt Lancaster — Gerard Carriere"

"Adam Storke — Phillipe Comte de Chagny"

"Ian Richardson — Choleti"

"Andréa Ferréol — Carlotta"

"Janis Orenstein - Clarice"

"Burl Ives - Sam the Snowman"

"Corinne Conley - Dolly"

"Carl Banas - the Spotted Elephant"

"Paul Kligman - Donner, Coach Comet, and Clarice's unnamed father"

"Peg Dixon - Mrs. Claus"

"Paul Soles - Hermey"

"Carl Banas - the Head Elf"

"Alfie Scopp - Charlie-In-The-Box"

"Stan Francis - Santa Claus"

"If I live to be 100, I'll never be able to forget that big snowstorm a couple of years ago. The weather closed in and.... well, you might not believe it, but the world almost missed Christmas. [tips his hat] Oh, excuse me! Call me Sam. What's the matter? Haven't you ever seen a talking snowman before? Nice around here, isn't it? I call it Christmastown, better known as the North Pole. The Christmas tree forest. Yep. Here's where we grow 'em. Nice place to live, you know. Christmas seals. Of course, the #1 citizens up here are the Clauses; Santa and the Missus. They live right over there. [scene pans to Santa's workshop] First castle on the left. Matter of fact, the only castle on the left. [chuckles]"

"Billie Mae Richards - Rudolph"

"Stan Francis - King Moonracer"

"Larry D. Mann - Yukon Cornelius"

"Matt Ryan - John Constantine"

"Skyler Day - Miranda"

"Mark Margolis as Felix Faust"

"Emmett J. Scanlan - Jim Corrigan"

"Lucy Griffiths - Liv Aberdine"

"Jonjo O'Neill - Gary "Gaz" Lester"

"Bailey Tippen - Astra Logue"

"Elyse DuFour - Nora"

"Harold Perrineau - Manny"

"Charles Parnell - Nommo"

"Charles Halford - Chas Chandler"

"Michael James Shaw - Papa Midnite"

"Jeremy Davies - Ritchie Simpson"

"Angelica Celaya - Zed Martin"

"- Dr. Isidore Latham: attending cardiothoracic surgeon"

"- Dr. Stanley Stohl: Chief of Emergency Medicine"

"Roland Buck III - Noah Sexton: medical student and brother of April"

"Patti Murin - Dr. Nina Shore: pathologist"

"Peter Mark Kendall - Joey Thomas: lab tech in pathology"

"- Jeff Clarke: 4th year medical student"

"- Detective Jay Halstead: brother of Dr. Will Halstead"

"Brian Tee - LCDR Dr. Ethan Choi USNR: ED Chief Resident (season 2)"