Killer Queen (JoJolion)

Killer Queen (キラークイーン) is the Stand of Yoshikage Kira, featured in JoJolion.

Appearance
Killer Queen is a humanoid Stand of similar appearance to its alternate counterpart. Its crown is flat, while two sharp, triangular shapes resembling a cat's ears stand on either side of the top of its head. Its eyes have cat-like vertical pupils in front of the generally light-colored sclera. It has no nose. With thin lips, its mouth is perpetually closed.

It wears dark, studded, leather-like forearm-length gloves, mirrored in style by a garter belt-like band at its waist and ankle-height footwear. Its thumbs are additionally bandaged in white.

Its shoulders, the back of its hands, belt buckle, both sides of its ankles and the top of its feet all bear the emblem of a skull with ears resembling its own; in varying sizes and external decoration. One minor yet constant difference between the designs of Killer Queen and its Part 4 counterpart is that, while Part 4 Killer Queen bears two skull emblems at its belt buckle, Part 8 Killer Queen bears only one.

Personality
Killer Queen shows no evidence of consciousness, it's face often apathetic.

Abilities
Not much is shown of Killer Queen's capabilities, but like its counterpart, it is a close-range Stand that always stays close to its user, Yoshikage Kira and has above average fighting abilities.

Moreover, it possesses power revolving around explosives and can deploy two types of bombs to fight, making it a powerful force in battle.

Explosive Bubbles
As described by Kei Nijimura, Killer Queen's primary ability is to create air bubbles that explode on contact.

These bubbles were described as floating in the air as projectiles, but are shown to also form inside a person's skin or an object if Killer Queen physically strikes them, having the target locally inflate and explode.

Sheer Heart Attack
Killer Queen can produce several treaded bombs called Sheer Heart Attack.

The Sheer Heart Attacks are miniature tanks that can also produce an explosion, but Kira can remotely control them with precision. Kira can choose how voluminous the bombs are and is able to make them small enough to travel through a person's bloodstream up to the size of someone's head. The power of the blast is dependent on their size, and Sheer Heart Attack was shown able to clear a blood clot from a young Josefumi Kujo, as well as detonate an entire pier. The Sheer Heart Attacks shown do not have a nose like their counterpart and resemble its beaten-down form.

Trivia

 * JoJolion's Killer Queen's ability may be a reference to when Diamond Is Unbreakable's Killer Queen turned Stray Cat's air bubbles into bombs.