Leon Kennedy:
Leon would either go as a pirate or a zombie. Yes, the zombie part is irony.
Chris Redfield:
Easily, some type of animal. Probably a bear.
Jake Muller:
Jake claims he does not dress up for halloween, but he definitely is the type to go as a band member of some sort.
Jill Valentine:
Jill, inevitably, goes as a cop almost every year. not fitting as she hates cops herself but it's become a tradition of hers.
Claire Redfield:
A bunny! Claire loves bunnies and that's her favorite costume to go as.
Carlos Oliveira:
Carlos is known for his good looks, so it's fun for him to go as a masked man.
Ada Wong:
Ada doesn't dress up for Halloween, but she enjoys the holiday.
Piers Nivans:
If Piers really had to pick, a monster or doctor is something he'd go for. He wants something realistic or scary.
Albert Wesker:
Wesker most definitely would go as Darth Vader or Vergil Sparda.
