While many aspects of Big Jack are quite similar to other "persona" characters of mine (he did start off as a mid-transformation between a cartoon version of myself, hence the strong resemblance to Skunk Boy, and a donkey, hence the similarities to Dominic Duncan), one thing that sets him apart is that he's a lot more like me in meatspace than Skunk Boy is at this point--Big Jack's canon age is somewhere in his late 30s, he rocks a beard, and he wears glasses. He's also stubborn as a mule and rather awkward and dorky despite his age, yet I think he'd get along quite well with most of my other characters, including the persona/fursona types.