Gerry Conway, Curt Swan and Dave Hunt put Superman into an alien Christmas story in Action 517 (March 1981).
Superman is attending the Daily Planet Christmas party, and almost winds up under the mistletoe with Lana Lang, but whooshes away when he sees an alien ship approaching. I love that Perry White gets a shirt that says “Foxy.”
But aside from that, this is a pretty average tale. Superman learns that two warring alien races are competing to find the “grayl.”
They each believe it is the key to victory, although there are prophecies that it will bring disaster.
Superman is basically an overseer in the tale, as the two peoples lose their power source, and have to learn to work together in peace to survive.
And Clark manages to kiss Lois under the mistletoe.
Aquaman’s series moves over from Adventure Comics, joining the rotating line-up, by Jean-Marc deMatteis and Don Heck. Cal Durham is still around as a supporting character, along with Mera and Vulko.
Aquaman faces off against his evil half-brother, Ocean Master, but he is simply an operative in a bigger battle against Aquaman.
Orm lets some of this slip, when he refers to their, supposedly dead, mother.
The story continues in the next issue.