Mr. Santos Happy is Mr. Happy's twin brother, as well as his buisness partner. Mr. Santos Happy works of his brother's Floating Summer Cabin Hideout and Crack Farm, where he helps Mr. Happy harvest the Wacky Weed Crops.

Each night, Mr. Santos Happy delievers free shipments of Wacky Weed to the children of La-La Land as well as regular shipments to high-paying customers.