I'd definitely classify Wolverine as a 2.
A few other characters to consider....
Mega Man. One of Capcom's flagship characters, he looks like a little kid, but is a robot. At the beginning of his games he's only OK in terms of power (probably a rank 6 to
, but the more bosses he defeats, the more weapons he obtains. I'm thinking the same could apply to this bracket - if he makes it to the next round, he "steals" one ability or weapon from those he defeats. Based on who he beats, he could get quite powerful by the end!
Spider-Man. Why not have old Web-head involved? I'd rank him as a 1 or 2.
Link - the hero of the Legend of Zelda series and the one who bears the Triforce of Courage. In all of his adventures, he ends up obtaining all sorts of interesting items that aids him on his quest, from boomerangs to masks that allow him to change shape. Although he often starts out as simply a pointy-eared farm kid, by the end of the adventure he's a force to be reckoned with. I'd rank him as a 4.
Dracula - more specifically, the one from the "Hotel Transylvania" movies. Even though he's a vampire, he's not bloodthirsty (he actually consumes a blood substitute, according to the original flick). He has all of the standard vampire strengths and weaknesses, but is amiable enough to not be a murderous psychopath, like most vampires. I'd rank him as a 3.
Scooby-Doo. The mascot of "The Mystery Machine," he travels with his human companions (most often Shaggy) to solve mysteries wherever they are to be found. Well... they tend to solve the mysteries while he and Shaggy run away and hide. Still, he tends to be victorious at the end... especially if offered Scooby Snacks! I'd rank him at a 12, but wouldn't argue if he was placed lower.
Juggernaut. Let's have another X-Man villain make an appearance (because the X-Men are the best.
) This thug (actually one of Charles Xavier's cousins) is immensely strong and nigh invulnerable... and not terribly smart. He wears a suit of armor in order to make more of an impact when he plows into something or someone (it's certainly not for his protection, because nothing can apparently hurt him!). His biggest weakness is his lack of intelligence. He wears a helmet to protect him from psychic attacks, but once that's knocked off, any psychic character can drop him with a thought. Another problem - he weighs a ton. So while he can't be killed in quicksand, or wet concrete, or deep water, it will significantly slow him down. I'd rank him as a 5.
Just a few of my initial thoughts. I'm sure I can come up with a few more later!