Big Mac can come across as a rude and stubborn tug, but he has a heart of gold, despite his tendencies to be macho, gruff and tough at times. He is very much willing to set aside his own safety for the sake of others, and usually (but not always) remains level-headed when undergoing a strategy. Big Mac works mainly with Warrior, and the two tugs have an extremely close, almost brotherly friendship. Even though Warrior's clumsiness and thick-headedness ocassionally frustrates him, he still respects and cares for him. He also stands up for Warrior if anyone makes fun of him.
As opposed to his gruff personality, he is fitted with a rich and melodic chime whistle.
Big Mac is, without doubt, an essential character to TUGS. He is the second strongest harbour 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, particularly if the Z-Stacks are mocking them.
- Big Mac is great friends with Gordon.
- Big Mac will meet Sora and His Friends in Sora's Adventures of TUGS