Athletes often have some interesting habits that the rest of the world probably can chalk up to: Whatever it takes to get the job done. For three straight fights, Cub Swanson has walked out to a song from “The SpongeBob Movie: Sponge on the Run.” For real. This past December, Swanson called on “Krabby Step” by Lil Mosey, Swae Lee and Tyga from the movie for his walkout to fight Darren Elkins at UFC Fight Night 199. Swanson won the fight with a brutal enough TKO that his “Killer Cub” moniker was right on the money. But that night at the UFC Apex in Las Vegas, Swanson had his wife, former UFC host Kenda Perez, and three kids on hand to watch him in person