A Comic Strip Clue for Final Jeopardy!

Alex Trebek commented yesterday that he believed the category of Comic Strip Title Characters was being employed for the very first time. The gentleman should know since he's been the host for the past 35 years (and I've watched Jeopardy every day since that debut of Mr. Trebek in 1984)!

All three contestants began writing their response instantly and all three answered correctly. I got it right also. My favorite comic strip series of all time!