Which of these characters won the Super Smash Bros. Fighter Ballot in 2015?

Bayonetta won the Super Smash Bros. Fighter Ballot in 2015 because she garnered a significant amount of votes and support from fans. Known for her stylish action in her eponymous games, Bayonetta appealed to many players with her unique combat abilities and compelling personality. Her inclusion in Super Smash Bros. was a result of her popularity and the demand from the community, ultimately granting her the victory in the ballot.