that reminds me! if they ever did a live action Legion movie, they'd be smart not to include Don and Dawn - finding redheaded m+f twins to play Ayla and Garth, with the girl able to and willing to convincing crossdress as the boy, would be hard enough - finding another pair for the Allens would just... why are there so many redheads in DC team books? Titans had 7 I can think of off the top of my head!

Cuz redheaded gals rawk.

Don't forget about the Ferro Lads

The original Doubleheader, from Jack Kirby, published 1954: