Sun-Sun (スンスン, Sunsun; Viz: "Sung-Sun") is an Arrancar in Sōsuke Aizen's army and one of Tia Harribel's three female Fracción.
Sun-Sun appears to be the most composed, mature, and intelligent of Harribel's Fracción, and advising her fellow Fracción, Apache and Mila-Rose, to stop arguing, as it makes them look weak, then chiding their angry responses. She has a sort of snobbish attitude toward her fellow teammates and complains when they get in her way during combat. She seems to embody old-fashioned Japanese values (such as ladies covering their mouths to hide exposed teeth during actions such as laughter). She easily gets them riled up by taunting them and putting her hand in their faces as if she's ignoring them. She has a habit of covering her mouth with one of her long sleeves and has an incomprehensible look in her eyes when doing so.
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