Enhancements: Shiro's sense of smell, taste and hearing are increased to abnormal levels. Being able to taste the ingredients separately in food, smell someone's perfume from blocks away and hear everything. It takes effort for her to block things out, so her hero costumes has factors to help her not get overwhelmed by tons of noises and smells. These skills are extremely useful for spying or intel gathering, which tends to be Shiro's speciality.
Monster Strength: Her strength isn't on levels with All Might or Izuku, but she could certainly lift a car or two and throw them. Her strength is more catering for her climb buildings and structures, but she tends to also find in handy in rescues. Shiro tends to not rely on her strength outside of carrying civilians to safety, climbing or holding out debris to give people a chance to run or fight.
Sharp nail Growth: Her finger nails and toe nails are able to extend to lengths similar of a wendigo from folklore, this is the quirks way of making a ultimate predator. Her claws help her to be able to climb various surfaces, scale buildings and of course, do damage if one is stupid enough to get to close.
Jaws of death: A scar to reminds Shiro that her quirk can hurt others just as much as save them. The scars are on either side of her face, staring at the corners of her mouth and ending by her ears, the reason for such is she's able to rip apart the scar tissue to reveal rows of sharp teeth, strong enough to chomp on metal.
Creature Form: Able to grow up to seven feet when standing on all fours, her limbs become structured like a feline, the horns that usually float just above her head, connect and grow, her jaw unhinges like it does in her normal form and her claws grow too. Shiro's skin and hair also turn snow white, the only colour being the red of her pupils and blackened claws.
Exoskeleton Skin: A protective layer of sorts, made to protect her from harm from sharp objects and weapons. It looks like her normal skin, yet when contact is made it produces black veins that keep her flesh protected. This exoskeleton is sensitive to fire and can be weakened by such, which leads to her armoured skin no longer being able to protect her from harm.
Night vision: Her eyesight is made for night, having the night vision of an animal. This results in her eyes being blurry and hard to use in light places. She's a perfect night hunter, but her skills in the day can be effected unless she wears sunglasses or sun/light reflecting goggles.
Sensitive to light, courses her to not be able to see with bright lights [Like the sun, lightbulbs, flashbangs]. She can avoid this mostly by wearing her special goggles during work or sunglasses given to her by Recovery Girl.
Sensitive to sound and smell, similar to her sensitive eyes, she can easily get overstimulated by loud noises [Sirens, bells, screaming, panic], her sense of smell is the same, but more to the fact it can get hyper sensitive to blood or corpses.
Weakness to fire, though her quirk gives her an exoskeleton skin of sorts, its's extremely weak to fire and can become fragile, making her prone to any kind of damage once the fire destroys it.
Needs to eat a lot of raw meat, if Shiro doesn't do this, she can lose control of her quirk and attack others. Without using her quirk, she only needs to eat small amounts, however every time her quirk is used, her raw meat intake increases until she satisfies it. It doesn't matter if the flesh is from an animal or person, both have the same effect, however it is hypothesized that human blood enhances Shiro's strength more, but she doesn't believe it's true nor does she wish to find out.
Blood frenzy, this is the consequence of not eating the meat she's require to. It would result in her losing her mind and attacking everyone, whether friend or foe.