Harry Vanderspeigle

On "Resident Alien," an alien has assumed the identity of the human doctor Harry Vanderspeigle and is masquerading as him in Patience, Colorado, something nobody realizes because nobody there actually knew the real Harry Vanderspeigle. The Harry alien's odd behavior and speech is rationalized as social awkwardness, total honesty, or simply being an asshole because, after all, there's no way there could be an alien in the small, sleepy town of Patience, right?

Example of:
Hugh Mann