After Pekka and the loyal three stole the masks and murdered her best friend, she went after them wanting revenge. Despite her fury, she wasn't able to make much of a mark on any of them. She was quickly taken out by Onyx at Pekka's command.

It was only after several decades that she was able to be revived by Kieran when he was desperately searching for help against Pekka and his crew. Of course, Oni is very willing to help him put an end to Pekka as a whole. Her new ghost typing will surely come in handy with this.