Do-S resembled a human female with long, blonde hair with a black flower on the left side of her head. She had a large chest and wide hips. She had pink eyes with black sclera and a pink, heart-shaped symbol on her forehead, as well as many piercings on both ears. She dressed in a very revealing BDSM outfit which was made of tight straps and held by metal rings, showing her figure and accentuating her curves. The straps connect at two points on her torso, both with rings at their centers, the first above her chest and the second on her belly, with the ring encircling her navel. Her right hand has two spiked leather rings and a leather vambrace, while her left hand has a very long leather glove with holes in it. She had well-endowed abdominal muscles. Her attire was adorned with high-heeled boots and ripped-armed warmers. In addition, she also donned a mask with an "S" symbol over the filters as well as a spiked choker. Her unmasked face had a wide, cracky mouth, fangs, and a long, flexible, slimy tongue.
Like her attire suggests, Do-S acted in a similar manner to that of a sadistic dominatrix and princess, such as whipping at her opponents and expecting them to follow her orders to the letter. She was also a sadistic being who liked to toy with opponents she found amusing; playing with Fubuki and suggesting using her to lure out Tatsumaki. When injured enough in a fight, she abandoned her dominatrix persona and became a ruthless fighter intent on destroying her opponent. When a fight fell out of her favor, she was willing to resort to desperate measures or cowardice, lashing out in desperation, then groveling to Sweet Mask, or sacrificing her slaves to flee from Tatsumaki. She was even willing to offer her services and accept powerful opponents as her master when truly cornered. While normally acting dominant, Do-S was proven to be submissive and shrewd when faced with individuals more powerful than her like Orochi, quickly making excuses to avoid punishment from the Monster King after failing to kill Tatsumaki and Fubuki. She was always eager to add more slaves to her army, jumping at the opportunity to subjugate Narinki's Private Squad and Atomic Samurai's Disciple's.
Powers and Abilities
Do-S, as a Demon-level Mysterious Being of the Monster Association, was an extremely powerful being. She was able to give Fubuki a tough fight, albeit by splitting her focus. Gyoro- Gyoro mentioned that her unique abilities might give more advantages to the Monster Association, unlike fellow Demon-level Awakened Cockroach.
Do-S possesses the ability to control the minds of others. She achieves this by hitting them with her whip. So far it seems that Do-S needed to strike her victims with her whip in order to control them or it just might be her preference. When Orochi considered eating her, Gyoro-Gyoro noted that this unique ability of hers would give the Monster Association more advantages if she was left alive. It appears that if she loses her focus or is momentarily knocked unconscious, her victims will be freed from her control subsequently.
Do-S had possessed the raw power and strength to send several people flying with just a crack of her whip. Her whip attacks are so powerful, that eventually pierced through Fubuki's telekinesis when Fubuki was holding off Do-S's mind-controlled love slaves. She was also strong enough to pierce Sweet Mask's eye and damage his face with her tongue while he was caught off-guard
Do-S was able to fight Fubuki, giving her a hard time, and also beating the Blizzard Group in the process.
Do-S was able to escape Tatsumaki after using her love slaves as a distraction. She is a very quick-skilled fighter.
Do-S was able to extend the length of her leg in order to trap Sweet Mask, then she was able to extend her tongue and attack him.
Do-S wielded a spiked whip that turned victims struck by it into love slaves, who are people that would blindly serve Do-S until they die, with a special stimulus. She uses it to fight opponents as well.