In the episode "The Guardian", on a world where events occurred as they did on Earth Prime twelve years ago, Quinn prevented history from repeating itself.
Quinn attended the fictional California University during the early 1990s to earn his master's degree in physics, specializing in superstring theory.
For the next five years, Quinn and the others slid randomly to each world with a fixed amount of time on each one, hoping one of those trips would take them back to their own earth.
In the season five premiere "The Unstuck Man", Quinn and his brother Colin were unwillingly used in an experiment by Dr. Oberon Geiger to merge people and parallel worlds.
After Mallory was sliding for a while, the Sliders met back with Dr. Geiger in the episode "Eye of the Storm", and he attempted to unmerge Quinn from his double.
She was one of the more optimistic people in the group, and enjoyed sliding as an adventure through her first year, though winning a deadly lottery that resulted in Quinn being shot in the back sobered her a bit to her situation.
She brought to the team computer expertise not limited to hacking, and was a believer in the supernatural due to being friends with a witch (Aptly named Sabrina) at Home.
It made her so distant that she once nearly joined a rock band whose leader was a Vampire, though Quinn after rescuing her let her know that she would always have the group, she stressed to him that she needed to hear it more often in some people.
Wade's final slide with the main group would presumably return her home, but only with Rembrandt as Quinn elected to stay behind with Maggie to help her fight Rickman.
In the years that followed, Rembrandt took increasingly lower paying jobs as his fame waned; however, he believed he could stage a comeback on September 27, 1994, when he was going to sing the national anthem at a San Francisco Giants baseball game.
With the world believing that their version had died in a mysterious accident, Rembrandt was able to step into his double's life and, albeit briefly, enjoy the fame and fortune he always wanted.
After completing his service, he moved to the United States, where he pursued graduate studies in physics, and met fellow student Christina Fox, whom he later married.
As a travelling companion, Arturo was arrogant, hot-tempered, and pompous, often referring to people who failed to meet his expectations as "blistering idiots."
In the DVD audio commentary on the Sliders pilot episode, series creators Tracy Tormé and Robert K. Weiss revealed that the character of Maximillian Arturo was very nearly played by actors other than John Rhys-Davies — Hector Elizondo was in fact the producers' final choice for the role prior to auditioning Rhys-Davies, but ultimately passed, due to the filming location.
Also on the DVD commentary, Weiss and Tormé reveal that other actors who were considered for the role included Ricardo Montalbán and David Ogden Stiers (who was reportedly one of the chief finalists).
When the sliders first met Maggie in the episode "The Exodus", she was a captain in the United States Marines under the command of Colonel Angus Rickman.
Maggie and Quinn were ordered to scout parallel worlds to find one that was suitable to build a colony where people would be free from the deadly pulsars.
Stuck in a wheelchair for about a year he was found by Doctor Oberen Geiger who used him as a test subject to combine subtle fragments of doubles across the multiverse.
After helping the Sliders who were left after the experiment to stop Geiger from combining the Multiverse he decided to join them along with scientist Diana Davis.
Since there was a psychic on that world who was tracking the sliders' journeys, Amanda Mallory was able to learn about her son's fate; that Quinn had been merged into his fraternal alternate.
Michael Mallory was played by Tom Butler in the pilot and "Gillian of the Spirits"; Jim Turner in "Slide Like an Egyptian"; John Walcutt in "Genesis", "Oh Brother, Where Art Thou?
On Earth Prime, Michael Hurley (played by Gary Jones) works at Doppler Computer Store, and was the boss of Quinn and Wade until they went sliding (September 27, 1994).
On an alternate Earth where, in 1994, the United States is a territory of the Soviet Union, Mr. Hurley is part of an underground American revolutionary group, and is under the command of this world's Wade Welles.
Pavel turned Rembrandt into the authorities on this world for handing him a dollar bill, which was the trademark of the underground American revolutionary on this alternate Earth.
In seasons 4 and 5, the Sliders encountered alternate versions of Gomez Calhoun (played by a different actor, Israel Juarbe) working at the Chandler Hotel.
The sliders began chasing Rickman to parallel Earths so that Quinn, Rembrandt, and Wade can find their home coordinates, and so that Maggie could get revenge.
He is first seen in the episode "The Unstuck Man", conducting a science experiment that involved counting down to the same point in time as to when the sliders' timer would hit zero.
Logan St. Clair played by Zoe McLellan appears in the first episode of season 3 "Double Cross", as one of the chief employees of prototronics an unscrupulous wormhole research corporation the Sliders become involved with.
They have airships called "Manta" that are made with living metal and Slide capable in addition to holding prisoners in place with a gravitational device.
He led a gang of land rustlers under the alias of "Mister K" in an effort to perpetuate a scheme to turn California into a gambling capital that would rival Las Vegas.