Chuck Chuck

Chuck is sending in Rebecca Romijn to do a man's job.

"We created a character originally that was just going to be a man, sort of an ominous, scary figure who has a penchant for torture, which he considers his art form," co-creator Chris Fedak says of the former supermodel's guest role on Friday's episode (8/7c, NBC), "Chuck Versus the Curse." "But then we started thinking about it, we were like, 'What if Rebecca Romijn was this guy? That would be scary and sexy.'"

From Chuck to Hawaii Five-0: TV's sexiest crime fighters

The reconceived spy, named Robyn Cunnings, will give Chuck (Zachary Levi) and Sarah (Yvonne Strahovski) trouble as they're trying to eliminate a harmful computer virus. Romijn is no stranger to filling deadly roles (Mystique in X-Men) or even characters with a male past (the transgendered Alexis Meade on Ugly Betty).

"She was game for [the role] and also has got a wicked sense of humor," Fedak says.

Meanwhile, new parents Ellie (Sarah Lancaster) and Awesome (Ryan McPartlin) take some time for themselves with a date night, which naturally means that a babysitter for Clara is in order. Don't worry, fans — it's not Jeffster! "Mom and Dad [Awesome] are babysitting," Fedak says. "We don't do a lot of baby in peril... yet."

The Year in Rewind: The worst of 2011

But this is Chuck, so no date night will remain romantic or calm for long. "Ryan McPartlin and Sarah Lancaster are getting drawn into the action," Fedak revealed. "They're very much the center of that episode. Watching Sarah Lancaster out in the field is great. She and Ryan are sexy, fun and exciting together."

Hmm, that sounds a bit like a Mr. & Mrs. Smith scenario, no? Lancaster has expressed interest in having Ellie pick up a gun. "Well, she doesn't blow anybody away," Fedak teases. "But I wonder if that might have changed after having a baby?"

Check out this preview of Ellie and Awesome's night of intrigue:

Chuck airs on Fridays at 8/7c on NBC.