an ordinary uncomplicated person
I think of bros as like a regular guy with very general interests.
His hero, Bruce Springsteen, is a gazillionaire, but he still manages to come across as a regular guy, so perception is reality.
He came off like a regular guy, and the audience appreciated it.
He says he is a regular guy and a plumber, and that he became angry watching his character picked apart on a national stage.
Dexter Morgan has considered himself, alternately, inhuman, a regular guy, a superhero, and simply a complicated fella.
And a regular guy means, I presume, a reliable or respectable guy.
Then, it developed, some reporter in the West had referred to him as "a regular guy."
He was ashamed of his own fear and proved that he was a "regular guy" by joining in the laugh and jibes of the fellows.
If we light, we're fighting with a regular guy, your insinuation to the contrary.
It suits you, somehow, like your hair, which would make the rest of us look a regular guy.
An honest, pleasant, convivial person, esp of the moral bourgeoisie: I know I'm not a regular fellow, yet I loathe anybody else that isn't/ She's like Wallace. A real fighter. A regular guy ( first form 1920+, second 1840+)