Come April 3, you can play as your favorite Darkstalkers characters! Well, sort of. At the very least, you will be able to dress up some Street Fighter V: Arcade Edition fighters as your favorite Darkstalkers characters, provided your favorite characters are Khaibit, Lilith, and Donovan.
Khaibit Costume (Menat)Lilith Costume (Juri)Donovan Costume (Urien)

Both Juri and Urien are part of the Season 1 Character Pass for Street Fighter V: Arcade Edition, while Menat is part of the Season 2 Character Pass. You can purchase each individually for $5.99 (USD) for 100,00 "Fight Money." Those who buy with real money will get their Battle Costumes along with what sounds like a ton of color choices for costumes.