Formerly a fisherman, Angus is a burly fellow who is bound to his job at the Middlemost Post Office as a deliveryman. Somewhat surly but quite friendly, he takes his job and the rules he follows very seriously, but he is happy to indulge in a few diversions every once in a while as long as the job gets done.
His relationship with Parker is one of a cynical old man and a young boy - willing to go along with his adventures, but the voice of reason throughout.
Angus is a large, bulky man with a yellow shirt with red stripes on it, green overalls, and a blue knit cap. He also has a beard, a mustache, and hairy arms.