The Entrancing Dr. Cassandra - S3-E25
Trivia: Cassandra springs all the arch criminals from prison. We see Joker, Riddler, Penguin, Egghead, Catwoman and King Tut and hear them laughing (dubs of the original actors' voices). But a close look reveals them all to be doubles. Apparently the budget didn't cover paying Cesar Romero & co. to appear in such a short scene. (00:15:30)
Answer: There were three well-known actors who played Mr. Freeze, each one a different height, weight, and physique. As these were notable guest stars, the costume designers would adapt the costume to best fit each actor who likely would want to avoid comparisons to the other Mr. Freezes, incorporate their preferences, as well as refresh the look, rework whatever didn't work in previous versions, and so on.
raywest ★