Unnamed man in white

The man in white with a beard is a resident of Gravity Falls, Oregon.

Season 1
In "Boss Mabel", he takes a tour at the Mystery Shack.

Season 2
In "Scary-oke", he attends the "Mystery Shack is Back" party.

He is seen at Ye Royal Discount Putt Hutt in "The Golf War".

In "The Love God", he is seen at the Woodstick festival.

In "Northwest Mansion Mystery", he is in the crowd of common-folk stationed outside of Northwest Manor to get a peek at the fanciness of the Northwests' party.

Appearance
He is a fair-skinned man, with brown hair, and a brown beard. He wears a white shirt, blue pants, and white socks in brown boots.