Seems the poor guy is always being dissed by somebody: a young pitchman who ends up dumping him, an employer who ends up firing him, a vampire lover who's been trying to avoid him, a Branded Mongrel who's clocked him twice, and a merman who wants him dead.
In spite of all that, he's actually a pretty decent guy -- good-natured, loyal, considerate, and unashamedly sentimental in spite of his gruffness and occasional vulgarity.
Simon, who's in his early thirties, is a bit more rugged-looking than the man below. Aside from that, there's definitely a resemblance, right down to the broad-brimmed hat. So, mentally add some disheveled hair, thin the beard and mustache to a carelessly shaved state, add some laugh-lines to that face . . . and there you have him!