QUEEN's kit centers on Johanna, a summoned companion that appears through every active skill, generating shields on each summon and enabling crowd control through nuclear effects. Her attacks and abilities trigger a nuclear state that stuns enemies who take multiple critical hits during its window. Passively stacking crit rating over time makes these stuns increasingly reliable as fights go on, while simultaneously building defense. Her combo skill knockbacks into Johanna stuns, and her ultimate creates a tornado that pulls all enemies inward while making her untargetable. Shields from Johanna summons grant boosted crit stats, further accelerating the stun loop. Attacks against controlled enemies heal QUEEN and nearby allies, tying her survivability directly to how often she lands crowd control.