Due to his curly hair, Portland Trail Blazers center Robin Lopez has previously been compared to Sideshow Bob, the murderous character obsessed with killing Bart from The Simpsons. It appears he has a sense of humor about it.
Lopez posted the photo of him next to a sign with Sideshow Bob on his Instagram with the caption: "Robert Terwilliger and yours truly #SideshowToSideshow #ILoveYouKelseyGrammer."
It sounds like Lopez is a fan of the show, and of the comparison. Robert Terwilliger is the real name of Sideshow Bob in the show, and Kelsey Grammer is the voice behind the character.