Michael
Resisting the urge to break out into laughter, Michael gave Mordred a bemused look.
"It's not like I had anything better to do at the time," the immortal said, "As for vampires, I can tell you what I know about the ones in my world. They're undying, preternaturally strong, fast, and resilient, sustain themselves on blood, and some of them can change their shape or bend the weak-minded to their will. They heal rather quickly, though beheading them or a stake through the heart will still do the job, though you're usually better off doing both, just to be safe. Fire is usually very bad news for them, though people and places of great holiness aren't exactly pleasant for them either, and depending on their age and the potency of their blood, sunlight can turn them to ash at worst and severely weaken them at best."
"To be honest," Michael continued with a shrug, "They're usually a nice break from the monotony of regular human opponents, between the skill they attain through their unnaturally long lives and the aforementioned advantages they have over humans, but they're not much better off against me in the end. I take it you'd like to learn a style specialized for vampires first, then?"