Giselle Gewelle

Giselle has blue eyes and long, black hair extending down to her lower back, with two strands sticking up like antennae.[3] Her attire is a variation of the Sternritter's typical white uniform, consisting of a trench coat with long sleeves, white shoes, and black leggings.[4] She wears a small white cap, which features a black peak and the Wandenreich insignia emblazoned on its front, on the side of her head.[5] She also wears a blue[6] heart buckle on her waist.

Even in dangerous situations, she almost always has a happy or goofy expression on her face.[7][8][9][10] Giselle has an antagonistic relationship with Candice Catnipp; she claims Candice likes to have "fun" with her subordinates,[5] and frequently mocks her power and temperament.[11][12][13] However, she is willing to help Candice when requested.[14]

In battle, Giselle is very cruel, using The Zombie to force several Shinigami to kill themselves while they retained awareness of their actions and begged her to stop;[15] however, she claims to not be a sadist.[16] She has no qualms with using her unique powers to turn the bodies of her fallen friends and comrades into weapons to fight with.[17] Giselle frequently uses reverse psychology to trick opponents into attacking her and triggering her special ability.[18][19]

Giselle presents herself as female, but Yumichika and Charlotte's comments about her having the "smell of a man", suggesting she is transgender. Tite Kubo would eventually clarify this in a Q&A that Giselle is indeed a transgender woman. The phrase where Yumichika tells her that "he reeks of semen" is omitted in the anime, and she also interprets it as a mockery of her corporal odor.

Giselle has an upbeat and cheerful personality and likes to make silly faces and snark at her friends. This obscures her true nature as a ruthless and cruel fighter who has absolutely no remorse when using her power to force a bunch of soldiers to kill themselves while they still retain awareness of their actions and beg her to stop. She also has no qualms about murdering her own teammates to gain access to their abilities or gleefully humiliate and abuse them, such as with Bambietta Basterbine. She even tongued out towards Mayuri Kurotsuchi.

Giselle can be offended when someone makes demeaning comments to her, such as when Yumichika suggested that she was a man because she smelled of semen or when she recounted her excitement when she finished with her partner and he asked her if she had an erection at the same time that she said it was a "sick pervert".

She is a transgender femboy.

You and Giselle are alone in the Sternritter's barracks