If the Wolfman/Creature fight was anywhere near the water, Creature wins by dragging poor old Larry Talbot to the bottom, and drowning his hairy @$$.
Dracula wins in a matter of seconds, provided that dawn is still hours away.
Frankenstein Bi+ch slaps Mummy into dust. However, if it's the Christopher Lee Mummy, it's an even match.
Phantom of the Opera uses dry ice fog to "see" the Invisible Man, makes disparaging remark about size of Invisible manhood, and takes him down using his fireball-shooting Skull staff.