Re: Alternate Earth #23(?): Living In The Wild, Wild West
Arac -- Gene engineering wasn't well known back then, and even Dr. Moreau might not be able to whip up something like him. True to the Ol' West spirit, I'd have to say he's a shaman (possibly Native American, possibly other) who can call on the powers of the Spider, and occasionally the form.
Breakdown -- Most likely one of those strapping, lantern-jawed heroes, specializing in defeating all kinds of crazy Steampunk contraptions. His prodigious knowledge of things mechanical allows him to bring these iron brutes down with little more than a touch in the right place.