Elfa Strike Squad are a group of characters featured in the Codename: Kids Next Door episode "Operation: N.A.U.G.H.T.Y.". They are a superhero team of elves employed by Santa Claus and called into action whenever Christmas is threatened. The members of the group parody members of the X-Men, while the name of the group is a pun on "Alpha Flight" (another Marvel Comics superhero team associated with the X-Men):
- Wintergreen (voiced by Dave Wittenberg): A tough guy elf with "peppermintium" claws and bones, a parody of Wolverine.
- Nutcracker (voiced by Dee Bradley Baker): A wooden-headed elf with teleportation powers and a nasty bite, a pun on Nightcrawler.
- Snow Angel (voiced by Cree Summer): A winged elf girl with power over snow after being pelted by a radioactive snowball, based on Storm and Snowbird (and possibly Archangel).
- Coniferous (voiced by Dee Bradley Baker): A rather tall elf with the power to cover his body in pine needles, a reference to Colossus.
In the episode, they are tricked into fighting Sector V after they are framed by the Delightful Children From Down the Lane for stealing Santa's REINDEER system. After finding out that Sector V was actually in possession of a Secret Santa Surprise Monkey (which Numbuh 3 had bought as a present for Numbuh 4), they realize that Sector V is innocent and help them clear their name.