Wenda possibly has a rude and arrogant personality; despite that she was rather calm and sane at first.

In Horror Mode, Wenda has gone completely insane and turned into a deranged killer, wielding a sharp knife used to kill the others. Wenda is possibly under the influence of Black, but this isn’t confirmed.

Wenda does NOT like Gray, and Nyanko not only confirmed that they don’t have interest in each other, but he also confirmed that Wenda dislikes him.