Buffalo is Goat’s best friend. He runs this site.
They met at Old Faithful and immediately hit it off. They travelled together for a while and eventually decided to become roommates. While Buffalo was content sitting around at home with his science experiments (including trying to restore a vintage Clone-A-Tron 3000 that he picked up at Goodwill), Goat became restless, so she decided to take off on a grand adventure.
Buffalo made her promise to send him postcards from her journey so that he’d never be lonely.
(And for the record, Buffalo is not a Buffalo buffalo.)