Killer Queen

Killer Queen (キラー・クイーン, Kirā Kuīn) is the stand of Yoshikage Kira featured in Part IV: Diamond is Unbreakable.

Appearance/Personality
Killer Queen is a humanoid stand with fox-skull emblems on its shoulders, waist, and knees, and a vaguely cat-like head. Also, the space behind its stomach is hollow, letting it contain small items or creatures there.

Bomb Creation
Killer Queen's abilities mostly involve explosions. Its primary bombs are actually booby traps, it touches a cohesive object (doorknobs, coins, even living bodies) and charges it. When someone touches it, the energy will be conducted into it, creating an internal explosion that completely disintegrates the target. On occasion, she will charge an object not to conduct explosive energy, but simply to explode when Kira finds the time to be right. By carrying Stray Cat in an opening in its stomach, it can utilize its control over air and produce invisible air bombs. Although even Kira can not see the bomb, he is skilled in determining its trajectory using basic mathematical skills.



Sheer Heart Attack
This secondary bomb is normally contained within Killer Queen's left hand. It is a completely autonomous bomb with unlimited range, looking like a tank-treaded ball with a fox-skull face. Its method is to seek out whatever the warmest thing in the vicinity is, then induce an explosion there, with a power proportional to the heat of the target. Also, Sheer Heart Attack is totally indestructible, having withstood countless blows from Jotaro's Star Platinum without a scratch. It has no weaknesses.

Killer Queen Bites the Dust
''Note: In the Manga, the storyline featuring this ability is called "Another One Bites the Dust". The Ability itself, however, is merely called "Bites the Dust", written in Rômaji (Western Letters), in the Japanese version.''

Late in the story,  Yoshihiro Kira's stand-creating Arrow pierces Yoshikage Kira's body a second time and grants Killer Queen a tertiary bomb. This bomb is actually a distinct, miniaturized form of Killer Queen, which normally stays with someone who knows Kira's secrets – most notably Hayato. If someone tries to interrogate that person about Kira, the tertiary bomb will enter their field of vision, get into their eye that way, and induce an explosion. Until Kira finds out who the bomb killed, he lets a brief temporal loop occur to one hour or day earlier. Even if the victim doesn't ask questions this time around, Bite the Dust will still kill them. Only if Kira is confident about who died will he let time flow normally. Still, if he has to protect himself right away (he can't maintain more than one potential bomb at a time), he will dispel the bomb. In all three cases, internal explosions can potentially completely disintegrate the victim. It is possible that Bites the Dust has some precognitive powers, as when Rohan used his Heaven's Door in Hayato he saw things that still didn't happen.

Hayato has added that Bites the Dust only works on non-stand users, such that Kira can only tell a non-stand user his secrets to enable the ability.

JoJolion
Although the name has not been revealed, the Yoshikage Kira of the SBR Universe also possesses a stand that has a similar appearance to Killer Queen.

Abilities

 * Bubble Bomb Creation: Unlike the original Killer Queen, it is unknown if this stand does have the ability to turn everything it touches into bombs. Instead, it creates bubbles similar to the Jojolion protagonist's and when these bubbles touch objects, they explode. This is similar to the original Killer Queen after having combined with Stray Cat.

Trivia

 * Ability-wise, Killer Queen is the opposite of Crazy Diamond; it is capable of disintegrating objects and people, whereas Crazy Diamond is capable of restoring them.


 * Killer Queen has also been shown to appear at the call of its user even after death; whether this is a feature unique to Killer Queen or a quality that all stands share is unknown.


 * The abilities of this stand appear to be a reference to some lines in the lyrics of the song Killer Queen:

''She's a Killer Queen Gunpowder, Guillotine Dynamite with a laser beam Guaranteed to blow your mind Anytime''

Playful as a pussy cat.
 * The stand's appearance may also be a lyrical reference from a line in Killer Queen:
 * Killer Queen's name and abilities are based on the three songs by Queen: Killer Queen, Sheer Heart Attack (also an album) and Another One Bites the Dust.
 * As far as Stands go, Killer Queen is different due to how usually if the stand would take the gender of its user (if it is humanoid Stand), & Killer Queen being a female Stand.
 * Killer Queen is first stand to have same name as its user, which in this case is Kira.
 * Bite the Dusts power might be inspired by movie Groundhog Day, where main character is stuck in time loop and lives the say day over and over again.