10 Amazing Behind The Scenes Secrets Of Star Trek: Deep Space Nine

And speaking of our gelatinous pal...

Perhaps second only to McCoy and Spock, Star Trek's greatest adversarial relationship belongs to Quark and Odo. One a duplicitous, greedy, scoundrel, the other a straight-laced, by-the-book enforcer of the law, Deep Space Nine could have simply been an entire show about how they clashed with one another and still comfortably run for seven seasons.

However as the series ran on, the conflict between the two softened into something resembling mutual respect, before finally becoming one of the all-time great begrudging TV friendships. They saved each other's life on more than one occasion, and it normally gets forgotten that, out of everyone on the station, the only one who tried to help Odo through his feelings for Kira was actually Quark.

However, this immeasurably satisfying arc wasn't some pre-planned storyboard in the writer's room, but rather the result of the real-life relationship between René Auberjonois and Armin Shimerman. Initially two relative strangers to one another and content to play on-screen adversaries, the time the two would spend in the make-up chair together led to a genuine professional respect and, eventually, a close personal friendship forming. The writer's, wanting to make the most of this chemistry, wrote it in to the show.

The same is also true of Terry Farrell and Micahel Dorn. No romance angle was ever envisaged when Worf was brought onto the show, but such was the chemistry he had in scenes with Dax the writers decided it would be a waste not to run with it.