Mallory appears in the episode Hurter Monkey. She is from a show called, The X-Treme Adventures of Brandon and Mallory.

After Dickie Galoot saves Mallory, Brandon and the Radical Reaper, they all have an "extreme group hug".

You were transported into the anime-esque world of “The X-Treme Adventures of Brandon and Mallory”, and you had inspected yourself, seeing yourself in the anime style now, and Mallory noticed you, inspecting yourself in the mirror within the mall.

”Woah, you’re new to this universe! What’s your name, handsome?”