Night of the Wisps

As said before in this deviation: Night of the Wisps is Greyzone's version of Halloween.

Tuffy loves Night of the Wisps, both because she gets candy, and she can give it away to ghosts, darks, and even poison types without them thinking she did something to them. Although pokemon can dress up as anything they want, the tradition is to dress like a famous ghost, dark, or poison type pokemon. Tuffy is dressed as a Duskull, which these guys seem to approve.