I've been watching this guy on Deviantart for a while and I am sad to say I do not know his real name or if he has an actual website portfolio with his amazing work, but he does some really awesome iPad sketches that I wanted to share with everyone because they're really awesome!
Using photoshop with a Mac touchpad makes me wanna smash everything in my house. Anyways, if I had tracing paper I could make this better and better and better, but alas I don't.
And yeah good call, how'd you know? It's a Van Helsing rabbit in the old west just like you definitely guessed. Who wouldn't guess that? I can only surmise that Bunnicula found time travel and this Van Helsing is chasing him through the ages.