After the gang (Beep-0, Mario, Rabbid Mario, Luigi, Rabbid Luigi, Peach, Rabbid Peach) beat a puzzle and reach the end of the cave, they find themselves face-to-face with a gang about to jump their Rabbid Luma!

Suddenly, a huge blade comes out of nowhere and defeats one,

The thrower exits the shadows, revealing Edge (Beep-0 will call her "Rabbid Edge", since she's a rabbid, but there is no non-rabbid "Edge", quite emo/goth looking)

Edge proceeds to wipe out the bad Rabbids, saving the Rabbid Luma (aka (a) Spark)

The gang is shocked, besides Rabbid Mario, who is love-struck by Edge. Who's gonna tell him that Edge doesn't feel the same way?

Edge joins the gang!