5) Elsa Bloodstone
Elsa Bloodstone is a reasonably new Marvel Comics character—she made her debut as a badass vampire hunter in 2001, and popped up sporadically through the Marvel universe since, most notably as a member of Nextwave. She appears in the MCU courtesy of the Werewolf by Night Halloween special, played by Outlander’s Laura Donnelly, which is casting just noticeable enough to hint that maybe Elsa still has more to do in the MCU. I can’t see her ever joining an incarnation of the Avengers, however (although she would have been a decidedly fun/more interesting addition to the Thunderbolts). Maybe Marvel Studios has more Halloween specials in mind? Even if you leave the vampires to Blade, there are mummies, demons, ghosts, and more that surely need slaying.
