In a very 1987 interview, Schulz explained that he felt introducing Snoopy's siblings was a blunder, much like the introduction of Eugene the Jeep in Thimble Theatre: "I think Eugene the Jeep took the lifetime from Popeye himself, and i am guaranteed Segar didn't know that. I realized it myself https://www.youtube.com/watch?v=BfgqPd0nAsY