"I could not be the best. Having the intellect, strength, power of comprehension, and the psychic power I was born with, I was supposed to be the being standing at the top. If she didn't exist... my biological sister, the strongest esper."

Fubuki also known by her hero alias Blizzard of Hell is the B-Class Rank 1 professional hero of the Hero Association. She is an esper, the younger sister of Tatsumaki, and the leader of the Blizzard Group, a B-Class hero faction. She and her sister are known as the Psychic Sisters. Fubuki is currently trying to recruit Saitama into her group. She's also a self-declared member of the Saitama Group.

Fubuki is a young woman with a curvy figure, chin-length, dark green hair with a fringe styled into a bob, and her eyes are light green. Her main attire consists of a long white fur coat, a dark green form-fitting V-neck dress with a high collar, thigh-high black boots and several white pearl necklaces.

Additionally, she sometimes wears dark tights and black pumps instead of her usual thigh-high boots.

On the outside, Fubuki is a cold-hearted, ambitious, confident individual who does not doubt her own abilities but understands her limits to an extent, causing her to not do anything irrational. She would do anything at all costs to secure her position as the top-ranked hero in B-Class. If refused, she would attempt to ruthlessly take them down, becoming a prominent source of the "newbie crushing" that is commonly practiced by aspiring professional heroes.

However, despite Fubuki's psychic talents and potential, it has been shown that she internally harbors a massive inferiority complex, being insecure and frustrated at living in the shadow of her much more powerful older sister Tatsumaki. While she agrees with Genos that she is well capable of reaching the higher ranks of A-Class, she believes she could never reach the top of it, let alone reaching S-Class, due to Sweet Mask's gatekeeping at Rank 1 of A-Class preventing anyone from advancing to S-Class. As such, she gathered lower-ranked B-Class heroes, hoping she might one day surpass her sister through strength in numbers, as opposed to Tatsumaki who prefers to work alone.