Whoa, bugger me sideways! I must say that Yes. I like this. I like this idea a LOT. It's kinda like an Omega Man/ I am Legend take on things. And wow. Sonic the Alpha vampire? For shame Sonic. For. Shame.

nice work, please up, I'm very interested to read/ know more!

Rotor! (AKA Boomer!) YAY! ^^ Any who, I notice you use the word 'creature' quite profusely, and the names in some places. Maybe ya should try changing it a tiny bit once in a while for some variety. Save for that mild mishap, I don't see much wrong with this. Nice ending, and I like how you've depicted Maria in your alternate universe. ^^