Robin’s hair is weird.
Due to popular demand (and because I should have mentioned it in my Curt Swan post myself), here’s a beautiful example of the Swan/George Klein art combo featuring Superman and his friends from Action Comics #309 (February 1964):

For more on this issue (including more representative panels) I direct you to this previous post of mine, as well as this one.
Yeah, that hair makes me wonder about the shape of his head. Maybe he’s secretly a lizard person?
Otherwise, what a great collection of Swan/Klein figures. So expressive!
That is not Robin, that is Dick Briefer’s Frankenstein.
Flattop! To the Batmobile!
I think it’s more like “Robin’s head is weird.”
I don’t remember the story, but usually Clark is played by Batman, which means that Batman is probably Robin, and that Robin is probably Alfred or Ace the Bat Hound, which explains everything!