Who's This? A couple Christmases ago, I ran a "Who's This?" feature on Santa Claus as he appeared in the Bronze Age, teaming up with Superman. It wasn't the first time he did so. In fact their partnership goes all the way back to the Golden Age. It's a nice way to kick off SISKOID'S HOLIDAYS WEEK, moving us from Christmas to New Year's, don't you think?
How you could have heard of him: Vintage Coca-Cola ads?
Example story: Superman's Christmas Adventure (1940) by Jerry Siegel and Jack Burnley
The villains then turn their attentions to the Planet's toy drive and try to burn the stash down, Clark and Lois with it, but they fail. So they go back to the North Pole, gas the elves, and trash the workshop.