The original quantum quartet. Quinn Mallory, Wade Welles, Rembrant Brown, and ofcourse Professor Arturo.

The Early episodes of season three weren't half bad, they had the entire original cast and good episodes like "Double Cross" and "The Guardian".

After the season 3 two part episode "The Exodus" professor Arturo was killed off and we were given Maggie Beckett, Captain Maggie Beckett. This made the cast much different than before.

Season 4 brought us many more changes than season 3. We were faced with the loss of Wade who is kidnapped and taken by the Kromaggs and introduced to Colin, another new slider. Now the group of four consist of Quinn , Rembrant, Maggie, and Colin.

It seems that each and every season we have to face more changes. Now we lose two more Sliders. Quinn and Colin who are both wound up in an evil scientist plot to take over the dimensions. Rembrant is now the only original Slider remaining. He now has MAggie along with him for the ride and two new Sliders, Mallory and Diana Davis.