Within a 1987 interview, Schulz explained that he felt introducing Snoopy's siblings was a slip-up, just like the introduction of Eugene the Jeep in Thimble Theatre: "I think Eugene the Jeep took the lifestyle away from Popeye himself, and I'm confident Segar failed to recognize that. I noticed it myself https://www.youtube.com/watch?v=BfgqPd0nAsY