Donna Lou Retton Tubbs-Brown is one of the main characters on The Cleveland Show and since the Family Guy episode "He's Bla-ack!" she is now a recurring character on Family Guy. On the premiere episode of Season 25, she and her family appeared in the couch gag. However, they were thrown out (including Homer Simpson) which led to racial tension and a protest against the Fox network but they were eventually let back in.
Donna, and the rest of The Brown family appear in the ending credits gag of the episode "Homerland", going to a party to celebrate the 25th season of The Simpsons, along with families from tons of other FOX cartoons such as Family Guy, American Dad!, and Bob's Burgers. However, they are not allowed to go into the party because they're black. The family starts picketing outside the party, demanding to be let in. Homer Simpson, who was also disallowed in there, is joining them, saying that FOX is also against him. The Brown family is eventually let in, but Homer Simpson is still locked out.