Move over, Elf on the Shelf ― Kris Kringle has a new spy.

And this one is straight out of Westeros.

Introducing… the Lannister on the Bannister.

Actor Nikolaj Coster-Waldau ― aka Jaime Lannister in “Game of Thrones” ― appeared in a spoof commercial for the toy on Tuesday’s “Jimmy Kimmel Live!”

But instead of just reporting back on the kids to Santa Claus in the run-up to Christmas, The Kingslayer issues them a few sinister words of warning whenever he busts them for misbehaving.

“You’ll notice a difference almost immediately,” boasts the voiceover.

Check out the full parody spot above.