Scrappy.
I endure Jar Jar to this day, and I don't love him, but his presence is …fine. When I showed The Phantam Menace to my own kids like 15 years later, they loved him and I kind of came to an understanding that he was not meant for my "serious Star wars fan" fanboy ass, but for new incoming fans like them. (I was early college age when the prequels came out, now a 42 year old father of two)
But Scrappy- as a kid of the 80s who loved Scooby Doo, and would watch whenever it was on, even then I wholly knew that Scrappy sucked. As a matter of fact, I just didn't feel like any of the, then, "newer" episodes that included him were really authentic Scooby Doo, and pretty much couldn't watch them. He was just such a cheap, imposter character to me. Only classic Scooby is do-able for me.