- When Beaker takes one of Dr. Bunsen Honeydew's chemical mixtures, he acquires super strength and a letter logo beneath his button-down shirt. Seen in the comic "Disco Frog" from the 1979 UK Muppet Show Annual, this story was reprinted in the US in the book Muppet Madness.
- Beaker is on hand for Christopher Reeve's issue of Muppet Magazine dressed in superhero attire, spoofing Reeve's portrayal of Superman. From this same photoshoot, a collector's card was issued spoofing Superman II.
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