Elfa Strike Squad is a superhero team employed by Santa Claus and called into action whenever Christmas is threatened. They are the supporting characters of the Cartoon Network show, Codename: Kids Next Door. The members of the group parody members of the X-Men.
In Operation: N.A.U.G.H.T.Y., they were deceived into fighting Sector V, who had been framed by the Delightful Children from Down the Lane. When the Delightful Children themselves were revealed to be the true culprits, Elfa Strike returned to the North Pole along with Sector V to stop the villains. There, they were confronted by a rival holiday-themed superpowered group, the Faculty 4, who represent "Substitute Teacher's Day." After a heated conflict, these teachers were subdued and the Elfa Strike Squad and KND succeeded in saving Christmas.
- Wintergreen: A tough guy elf with "peppermintium" claws and bones, a parody of Wolverine.
- Nutcracker: A wooden-headed elf with teleportation powers and a nasty bite, a pun on Nightcrawler.
- Snow Angel: A winged elf girl with power over snow, based on Storm and Snowbird (and possibly Archangel).
- Coniferous: A rather tall elf with the power to cover his body in pine needles, a reference to Colossus.