Akaza is Upper Moon 3, the third strongest demon under Muzan's command. She is stubborn, harsh, short-fused and bloodthirsty fighter. She desires to fight only the strong, respecting them and yet loathing any who are weak. She doesn't retain any memories from before her transformation into a demon. She cannot remember what she was like as a human. She refuses to let herself harm or eat woman or girls. She has unkempt pink hair, and the kanji for "Upper Moon 3" is etched into her irises.