The Golden Diva is the final boss in Wario Land 4. Her appearance is that of Elizabethan robes, a fan, and multiple kabuki masks made of porcelain covering her real, grotesque and sinister-looking face. Each of these masks fall off every time she takes damage. The Golden Diva has in her possession the four artifacts that the prior bosses had: the crown that belonged to Cractus, the earrings that belonged to Cuckoo Condor, the necklace that belonged to Aerodent, and the bracelets that belonged to Catbat. The enemies that she creates even resemble these bosses. According to a Nintendo Power issue, the Golden Diva is an opera singer, although time and greed had gradually turned her into a "monster".
The Golden Diva cursed Princess Shokora while she slept within the Golden Pyramid, stealing treasures and turning Princess Shokora into a Black Cat. The Golden Diva stays at the center of an ancient pyramid at the end of the Golden Passage, guarding her hoard of legendary treasure. Wario reads a newspaper article about the treasure, and out of greed, he aims to steal it for himself.
Before the battle starts, Princess Shokora (who had been transformed into a Black Cat) tries to attack the Golden Diva. However, Shokora's minor tackle is not enough to defeat the Diva. The princess is abducted by the Diva's magic. When the true battle is initiated, the Diva splits her head into four copies. Three of these copies are transparent, while the other attacks Wario. When touched by a head, Wario is picked up, twirled about, and thrown at the ground, an attack which causes precious time to be wasted. Wario must jump on top of the head, making it turn blue and angry. Then Wario must pick up the head and do a charge throw upwards at the Diva's fan.
Once the fan is gone, she has four other attacks. Her first is throwing down a green enemy. This creature has spikes all around it and floats back and forth towards the ground, like a Butatabi. Wario must jump on top of the creature to stun it and throw it at the Diva's mask.
In her second attack, she creates a Big Ball. It has a smaller version of Aerodent's teddy bear on it. Wario must ram this ball. It will ricochet off walls and explode when it hits the third wall or the Diva's face. If it does hit her face, it will inflict damage.
Her third attack is much like Cuckoo Condor's second form's attack. The Diva sends eggs magically that appear and drop to the ground. When they hit the ground, they hatch into Black Ducks that home in on Wario and explode (significantly faster than the chicks hatched from Cuckoo Condor). To damage the Golden Diva when she attacks in this way, Wario must grab the eggs before they fall and throw them at the her face. If he does not throw the egg in time, it will flash a bit before exploding, hurting Wario instead.
The Golden Diva's fourth and final attack is a little more complex. She sends a Tonkachi falling to the ground. The spikes will disappear after a few seconds Wario must pick it up and throw it in the air so he can hit himself in the head with it. This will transform him into Bouncy Wario, and he must spring up and hit the mask to damage it.
After hitting her enough times, her masks will disappear and reveal her true, grotesque, and sinister-looking face. In this form, her arms are visible. She will try to attack Wario by plunging down whenever he passes underneath her and smashing the ground, revealing the spikes underneath it. Wario can damage the Diva by side tackling and jumping at her head after she has pounded the floor. After two attacks, she gets angrier and even more grotesque, and she withdraws faster from the ground, which makes it more difficult for Wario to reach her with an attack. When she is left with a single point of HP, her body disappears, leaving only her lips. The spikes and what remains of the floor will also vanish. Once her lips are attacked, the Black Cat is freed from them, and the Golden Diva is defeated. Any remaining treasure chests, and all four pieces of Jewelry worn by the Diva are recovered. The closing sequence will then begin to play, showing Wario and the Black Cat running to escape the Pyramid as it begins to crumble.
Time given in different modes
The time given to defeat the boss varies on the game mode.
Wario Land 4 North American instruction manual (page 6)
"[...] the arrogant, selfish, money-crazed Golden Diva."
Wario Land 4 European instruction manual (page 104) (Italian language section)
"Princess Shokora, victim of a spell [cast by] the bad Golden Diva, selfish and greedy."
Wario Land 4 Shogakukan game guide (Japanese)
"[Shokora and the pyramid] had been captured/occupied and cursed by the arrogant and selfish golden dead person, Yōki." (page 2)
"Pyramid master - the instigator [of the] pyramid occupation, Yooki. [Her] make-up-less face is able to be covered up [with] many masks, can [you] see it?" (page 143)
Nintendo Power Advance issue #3 (page 69)
"Hitting the awful opera singer in the face is the key to silencing her for good. She has three forms, so be cautious."
"She was the one that had imprisoned Princess Shokora long ago. I'm not sure what the Golden Diva used to be, but time and her greed had turned her into a monster. Her five porcelain heads leered at me as she taunted me and attacked."
Names in other languages