Big Mac is one of the strongest harbour tugs from Bigg City Port.
Big Mac can come across as a rude and stubborn tug, but he has a heart of gold, despite his tendencies to be gruff at times. He is very much willing to set aside his own safety for the sake of others, and usually remains level-headed when undergoing a strategy. Big Mac works mainly with his brother Warrior, and the two tugs have an extremely close friendship. Even though Warrior's clumsiness and thick head occasionally frustrate him, he still respects and cares for him. He also stands up for Warrior if anyone makes fun of him.
He is the second strongest tug of the fleet and despite his sometimes abrasive manners, he can be kind and gentle. He is always willing to help out someone in trouble, and uses his great strength to help whenever he can. He also has a strong protective streak for the Star switchers.
Like the rest of the Star Fleet, Big Mac is based on the tugs of San Francisco waters from the 1920s.
Big Mac is painted in the Star Fleet's corporate livery. This consists of a black hull, a yellow superstructure, white mast and an American flag-styled red white and blue funnel. His name is painted on the sides of his bow in white and he has the number "2" on his funnel. He wears a navy blue cap.