Mad Mew Mew

Formerly the Mad Dummy, this ghost possessed a Mew Mew doll while still keeping her angry and violent personality. Mad Mew Mew appears to be a humanoid doll that resembles a humanoid cat with a pink long hair, pink ears and pink tail. She wears a frilly tutu, a t-shirt, a pair of stockings and a pair of ballet shoes. Her clothing are pink in color. She also has yellow bell like ornament on her hair. Mad Mew Mew is always angry and a bit rambunctious. She has a tendency to make violent threats and repeat herself three times in a row. She also has a new habit of adding "mew~" to the end of certain sentences. Her angry and violent personality stuck with her since she was a ghost in a dummy.

She seems to have a masochistic crush on Undyne, as she enjoyed being her training dummy and feels pleasure when Undyne practices her moves at her.

Despite her violent tendencies, she can show gratitude when someone helps her, like her thanking Frisk when they taught her about other emotions, which made her have am easier time to fuse with her doll body. Mad Mew Mew's main weapon is her wand, which she can fire cat-shaped magical bullets from. And since Mad Mad Mew is still not fully fused to her doll body, she can't be killed and can't feel pain from attacks. </Powers and abilities> In the past, Mad Mew Mew was a genderless ghost living in Waterfalls and they are a cousin of Napstablook, Mettaton and a ghost that possessed a dummy in the Ruins. They are a violent ghost who possessed a dummy in the trash heaps of Waterfalls, calling themselves Mad Dummy. They also have a side job as Undyne's personal training dummy. One day, a human named Frisk came across Mad Dummy in the trash heap, and Mad Dummy is angry at Frisk for "interacting with their cousin in the Ruins so that the cousin was so scared that they left their dummy" which cause them to attack Frisk. The fight was broken by Napstablook's tears falling on Mad Dummy, causing them to retreat.

Later on, Mad Dummy left their dummy body and possessed a Mew Mew doll in Sans and Papyrus's house instead. Frisk later stumbles on her in the basement of Sans and Papyrus's house. Mad Mew Mew recognizes Frisk from their encounter in Waterfalls and attacks them because she believes that her angry and violent emotions during that fight will help her fully fuse with her doll body. However, no matter how angry she became during the fight, she can never fully fuse with the doll body, to which Frisk tells her to try making other emotions so she can fully fuse with the doll, which Mad Mew Mew accepts the advice.

After the barrier is broken, Mad Mad Mew decides to become a pop star, which she dreams that she'll have a popularity that rivals Mettaton himself.