A big transition episode, “Runner” was mostly filmed on location in a forest that serves as a planet with a badly depleted ozone layer and dangerous solar radiation. This is the last appearance for original cast member Rainbow Sun Francks for a little while. He’ll appear just twice more this season. His place in Atlantis’s military hierarchy is filled by an interesting choice: Kavan Smith as Major Evan Lorne. This is a character we actually met before, briefly, in a nice bit of continuity. He was introduced in the season seven SG-1 story “Enemy Mine” about two years previously.
But the big addition is, of course, future heartthrob Jason Momoa as Ronon Dex, who’ll be a regular cast member through the end of the series. I think that his planet may have been the most technologically advanced in the Pegasus galaxy, meaning that it was the biggest threat to the Wraith. He may be the only survivor. He kind of fills the position on the team that Wolverine does in the X-Men: the fighter who gets results by ignoring orders. Of the two, I kind of like Lorne a little better because anybody who has to deal with Dr. McKay’s mouth has my sympathy, but Ronon is fun, too. A few years later, when I read that Momoa had been cast as Aquaman, I said that was the most interesting thing that has ever happened to Aquaman. I’ve never actually seen Momoa in the role, because I’m still not interested in Aquaman, but I can believe he’s pretty entertaining as the character.