Bayonetta is a character in The Air Ride Series.
Bayonetta got into Smash 4 by winning the fighter ballot. Good for the Bayonetta fans, but many residents of Crappy Town dislike her, and are against her inclusion, especially King K. Rool and Wolf, who hate Bayonetta. Bayonetta brags about her inclusion in Smash all the time.
Bayonetta is not as hated as Corrin. The difference is people wanted Bayonetta, and nobody wanted Corrin.
It has been confirmed Bayonetta forged the results of the ballot to get included.
Her twitter handle is @Beyanutter