Obvious choice for a female is Buffy. For a male, you could go with Helsing or Van Helsing. From the Buffyverse, you could go ironically with Angel or Spike.
I've been binge watching "Buffy the Vampire Slayer" lately. Can you tell?
You could also focus to one kind of undead, becoming the Undead Hunter's nemesis. This usually makes it easier to come up with names in my experience. Like Borgoff Silvermace (vampires), Groveck Nightlight (ghosts), Minella the Undertaker (zombies)and so on.
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I've been binge watching "Buffy the Vampire Slayer" lately. Can you tell?
... ok, how about... Kiran: A Hindi name, this means "beam of light"