Along with the rest of Sonic's friends, Big decided to participate in the Olympic Games. He joined the hammer throw event alongside Knuckles and Silver, but the three then fell victim to a trap set by Dr. Eggman. Knocked out by a gas trap built into his hammer, Big was thrown with many of Sonic's friends into a large Prison Egg, forcing Sonic to compete against Metal Sonic to save them. Fortunately, Sonic was victorious thanks to his harnessing of the "Spirit of the Olympics," and Big and the others were freed. (StH: #242)
Big is identical in appearance to his counterpart from Mobius.