Mac is a bright, selfless, smart, sensible, imaginative young boy, and the creator of Bloo. Mac's outfit when it's raining outside consists of a red raincoat with his hoodie up. Mac's winter outfit consists of a red hoodie and a red beanie with white trimming on the front. When he goes to bed, he wears blue pajamas, with a button-up top. He wears a red t-shirt with a white sweater underneath, black and white tennis shoes, a dark green backpack, and tan khaki pants. He spends most of his time hanging out with Bloo and his new friends at Foster's, where he can stay safely away from his obnoxious bully of a brother, Terrence.' Appearance Official Description 'Mac is a smart, creative, somewhat shy boy.