He gets around! He’s also the cape-wearing attorney and the guy in the newsstand who won’t take the bill with lipstick on the president. And he’s there when Kramer gets arrested as the smog stranger.
The attorney I knew about, I'll have to check out the Smog Strangler episode sometime; his was the voice of the guy who'd ordered the kosher meal when Elaine was flying to Europe, and in the original introduction to the Newman character, his voice is used for Newman in the original version, but it was dubbed for reruns after Wayne became a regular and visible character.
[And he’s there when Kramer gets arrested as the smog stranger.]
I missed that one!!