Caleb McGillvary, known as Kai, may have been among the first so-called milkshake ducks, a term for a noncelebrity who delights the internet, only to fall from grace. In 2013, he was interviewed for an on-the-scene news segment in which he recounted how he had intervened to stop a crime while hitchhiking in Fresno, Calif. The video, where he is referenced as “Kai, the Homeless Hitchhiker With a Hatchet” quickly went viral, and McGillvary — a goofy, charismatic, eccentric vagabond — was hailed as a hero.

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Persons: Caleb McGillvary, Kai, “ Kai, McGillvary, — Organizations: Homeless Locations: Fresno, Calif