Mewberty Star

Mewberty Star is the demented version of Star Butterfly after she's hit with Mewni's equivalent to puberty, which is mewberty. Star's "Bad End Friend" AU version comes from episode 6, season 1 of "Star vs the Forces of Evil", titled "Mewberty".

In the episode, Star Butterfly transforms into her Mewberty form, which happens to look like a large purple butterfly. This "mewberty" is caused by being around boys at the time a human would experience puberty. "Mewberty" is when purple hearts grow on your skin in the presence of the opposite sex. These grow more when there is prolonged exposure. Eventually, they form a cocoon around the person. When they emerge out of the cocoon, they are in their Mewberty form. This will normally wear off by 3:57 pm, or it won't at all, which is what happens to this AU character.

From what we see in the episode, Mewberty Star exhibits a childish and irrational personality, acting more like an animal than anything else. She can also be described as a sort of "Yandere", as she is always after boys, as she puts it "suddenly looking as boys as if they were made of bacon, Like you've never eaten it in your before, and all you want to eat is bacon. in that regard she reminds everyone of a moth in that sense."

Meeberty Star's appearance is very frightening when up close. She has dark purple skin, six arms, butterfly wings, and huge, light purple, heart shaped eyes. Her hairstyle and hair color are also changed to being these two big pointy braids that stick up (Star Butterfly's original hair was long and yellow). In the form, her voice becomes monotonal.

Mewberty has extra limbs (arms) and is able to form webs from her fingertips that appears as these purple heart leave pedals (which replace her magic and manifest as purple hearts) to trap boys in. She also the ability to fly from her wings.