While I was searching for clipart for the previous post, I found this picture. Just now when I showed it to Ike he said, “That’s not me?!” He agreed with me that the model looks just like him.
P.S. I just said aloud while typing, “I’m not sure how to spell doppelgänger,” and Ike said, “That’s right.” (We’ve now added the umlaut at Dean’s request.)
Update: Here’s the evidence. Ike preferred not to stick out his tongue, and we didn’t get the pose exactly right, but there’s no question of a resemblance.