Once he joins the Atlantis Expedition, Ronon proves an invaluable member of the team, the most capable fighter, skilled in hand-to-hand combat, firearms and weaponry.
Basically, he is The Most Dangerous Game’s Sanger Rainsford, living a solitary life on the run and eluding a technologically advanced race’s best hunters.
Ronon Dex is introduced as a runner, a person implanted with a tracking chip by the Wraith that they hunt for sport.
Ronon is the character that established Jason Momoa as a badass and a decade after Stargate: Atlantis went off the air, he remains the actor’s most badass role, save for one.