McEldowney’s meaning for gink must be quite different from the one I am most familiar with!

The Urban Dictionary of course gives some dozen unrelated entries of varying plausibility, some of which could work in this cartoon context. (But none of which are exactly mine.) The slang section of dictionary.com is more sober, but the main American entry could work with the cartoon:
noun Slang: Sometimes Disparaging and Offensive.
a person; fellow.
Is that all there is to it? Or do you see a better fit for one of the other definitions?