Marceline Tsumetai Igitsun

Marceline is Mayu's Tsundere personality. Mayu gained her 'loss of sanity' when she went paranoid and thought she was forgotten by Alexander. She accidentally created Marceline out of major depression.

Story
Mayu motivated Alexander with her lovely notes everyday. One day, Alexander lost internet access temporarily, and Mayu felt sad when she thought Alexander doesn't care about her. She lost hope and changed herself into a Tsundere girl. Alexander knows the Mayu is still the same, but Alexander and Mayu's relationship went downhill. and Mayu no longer responds to Alexander. Alexander blames herself for her wrongdoings as she left for 32 months.

"Mayu, the deredere girl sends her lover many letters with heart and soul, but her lover always ignored them and never replied or responded her. Her friends started to even ignoring her. Especially her own lover. Runs away whenever she sees Mayu. All this were very effective for Mayu's stressful life of many mental disorders and slight high blood pressure, and shattered her heart in pieces. So one night, she has died... seeing how none cares this unloved miserable soul. She died in peace. But some forces stopped her from leaving the world, so she came back... as a cold-hearted Tsundere called Marceline Tsumetai Igitsun Alexander and everyone seems to hate me or don't care of me, so over and out I don't know what to do." - Mayu's Bio

Personality
Marceline is often sarcastic. She is very cold and hostile, but it is said that once you get to know Marceline, she shows her warm side with a glimpse, according to Mrinalini. When angry, Marceline obnoxiously runs and slashes everything around her and becomes hostile.

Design
Marceline has white short hair with a ponytail, and an inverted costume of Mayu. Marceline usually carries her sword.