Uncle Grandpa is everyone on Earth's magical uncle AND grandpa, who travels around helping people and changing their lives forever.
Mr. Gus is a dinosaur person who has seen everything in his million plus years on planet Earth, so nothing ever phases him.
Pizza Steve is a talking piece of pizza that wears cool sunglasses. He's also the greatest person to ever live, at least according to himself.
Belly Bag is Uncle Grandpa's talking magical satchel/best bud, and he provides Uncle Grandpa with an endless supply of useful and interesting stuff.
Giant Realistic Flying Tiger is Uncle Grandpa's main mode of transport during battle. She also loves boy bands and girly stuff.