Who's This? The ridiculous villain on page 29 of Who's Who vol.XXVI.
How you could have heard of him: Though he has appeared in the background of Roulette's club in JSA #28 (2001), his only major role was as the foil in World's Finest vol.3 #2 (1999).
Example story: Green Lantern vol.1 #30 (1948) "The Last Criminal Gets an Education" by John Broome and Irwin Hasen
So does Knodar deserve return engagements? Well, if he had a new suit, perhaps. The idea of a time traveling criminal who wants to outdo history's isn't bad, and there's the still-waiting-to-be-told tale of Knodar fighting Abra Kadabra for future criminal supremacy. But I'm in hurry. Are you?
Who's Next? We're done with volume 26, but not with this series of Who's Who. I went a little fast in the early days, and skipped over characters that deserved better. If you have any requests, I'll gladly entertain them too.