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Game icon for Pikmin 4 articles, from the September 13<sup>th</sup>, 2022 Nintendo Direct.

Empress Bulblax

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Empress Bulblax In-game icon.
The Empress Bulblax's spirit in Super Smash Bros. Ultimate. It uses official artwork from Pikmin 2.
Appears in Pikmin 2Pikmin 4
Scientific name Oculus matriarcha
Family Grub-dog
Areas None
Caves Frontier Cavern, Hole of Beasts, Hole of Heroes
Challenge Mode levels Emperor's Realm
2-Player Battle levels None
Attacks Crush Pikmin, cause boulders to fall, birth larvae

The Empress Bulblax (クイーンチャッピー?, lit.: "Queen Chappy") is a boss in Pikmin 2 and Pikmin 4. Its markings and general features are similar to those of the Red Bulborb, but its body is much larger and composed of five distinct segments; its comparatively tiny legs dangle above the ground.

Unlike most bosses, its behavior is different each time it's encountered. In the Hole of Beasts, it must be woken up before battling, rolling from side to side to crush any Pikmin under its weight. In the Frontier Cavern (as well as the Emperor's Realm in Challenge Mode), it will already be awake, and giving birth to Bulborb Larvae. In the Hole of Heroes, it does the same while also causing boulders to fall when it hits a wall.


Weight Max.
Seeds Value Health Regen.
20 30 30[note 1] Poko icon.png × 15 5000[note 2] 1.5[note 3]
  1. ^ This enemy cannot be delivered to Onions in-game. This information is obtained from the game files.
  2. ^ In the Hole of Beasts, this enemy has 3300 HP instead.
  3. ^ In the Hole of Beasts, this enemy regenerates 1 HP per second instead.


Olimar's notes

Initial observations placed doubt on the capability of the grub-dog family to support a strong ant- or beelike social structure, but recent studies show the family is capable of such complexity. The egg sac of the largest female grub-dog within a given range swells to dramatic proportions in response to environmental changes, such as the sudden depletion of prey species. These females temporarily take on the role of pack matriarch. Also, in pack formation it has been observed that nearly all males not involved in species reproduction undergo natural sex changes. The characteristics of such specimens are quite intriguing indeed.

Louie's notes

For a sophisticated delicacy, make a pate de foie gras from this massively obese creature's liver and spread it over a sesame cracker.

Pikmin 2 Nintendo Player's Guide[edit]

The rolling wonder squashed Pikmin and its own larvae. Attack one end of the creature by tossing a small group of purples at it, but call them to your pilot's side before it shakes them off. If they are thrown off, they may land near the creature's rolling midsection.


The following article or section contains guides.
The strategies presented may not be the only ones or the best ones.

To defeat the Empress Bulblax, throw (preferably Purple) Pikmin onto its face and call them back before it throws them off. After shaking Pikmin off, the boss rolls from side to side across the chamber in an attempt to crush its aggressors, smashing into walls, and making rocks fall from the ceiling in most encounters in the game. Although risky, the Bulblax can be petrified if the spray is released on the middle of its elongated torso.

The Empress Bulblax is one of the few bosses that can vary depending on where the player encounters it: for the Hole of Beasts fight, it is easier to throw the Pikmin on the Empress Bulblax's side to the left and retreat to the alcove in the wall between attacks. Here, it is also effective to swarm the body from the left at the start of the battle, before the boss wakes up. Doing this will deal heavy damage if many Pikmin manage to latch onto the Empress.

This is not as effective in the later two battles, as the Pikmin have less time to attack the enemy before it shakes the Pikmin off, and they have the Empress continuously giving birth to Bulborb Larvae. These are easily defeated by their own mother's rolling; alternatively, in the Frontier Cavern, since the number that can exist is finite, they can be lured away from the Empress with one leader while the other fights the boss, resulting in a fight that is about as easy as in the Hole of Beasts. For the Hole of Heroes fight, the player starts off behind the Empress, and it can make boulders fall after hitting the walls; these are most easily avoided by moving behind the exit hole, itself behind a gate. All rules apply here the same as the Frontier Cavern fight, but trapping the larvae is nearly impossible, and requires a decoy leader who is in good condition.

When defeated, four of the Empress Bulblax's front body segments explode, leaving only the segment attached to the head, which can be returned to the Research Pod and cashed in for Poko icon.png × 15.

During the fights with the Bulborb Larvae, it is suggested that a leader should distract the larvae, preferably at full health and with the Metal Suit Z obtained, as the larvae can deal a lot of damage otherwise.

In other games[edit]

Super Smash Bros. Brawl[edit]

The Empress Bulblax appears as a trophy in Super Smash Bros. Brawl.

The Empress Bulblax trophy from Super Smash Bros. Brawl. Description:

A member of the grub-dog family, transformed by environmental factors. Due to her ridiculous size, the empress bulblax can no longer walk on her tiny legs. She just wiggles around, rolling from left to right. Although the female continues spawning bulborb larvae, she unfortunately rolls over them with her massive body.

GameCube icon.png Pikmin 2
How to obtain: Random appearance. Type: Fighter Related

WarioWare series[edit]

The Empress Bulblax makes a cameo appearance in WarioWare: Smooth Moves, in a micro-game simply called Pikmin 2. In this micro-game, the player must tilt the Wii Remote to squish some Pikmin. This micro-game returns in WarioWare Gold.

Super Smash Bros. Ultimate[edit]

The Empress Bulblax appears as a Primary Spirit in Super Smash Bros. Ultimate after enhancing a Red Bulborb spirit. Its unique trait allows fighters to gain a large boost to their overall stats upon eating a food item.

Technical information[edit]

Pikmin 2 technical information (?)
Internal name queen
Global properties (List)
ID Japanese comment Property Value
s000 friction(not used) Friction 0.5
s001 wallReflection Unknown (wall bounce speed multiplier?) 0.5
s002 faceDirAdjust Unknown 0.25
s003 accel Acceleration 0.1
s004 bounceFactor Unknown (bounce when it hits the ground?) 0.3
fp00 ライフ HP 5000
fp01 マップとの当り Unknown (related to slopes) 90
fp02 ダメージスケールXZ Horizontal damage scale 0
fp03 ダメージスケールY Vertical damage scale 0.05
fp04 ダメージフレーム Damage scale duration 0.35
fp05 質量 Unknown (weight?) 0.01
fp06 速度 Move speed 125
fp08 回転速度率 Rotation acceleration 0.1
fp09 テリトリー Territory radius 200
fp10 ホーム範囲 "Home" radius 25
fp11 プライベート距離 "Private" radius 70
fp12 視界距離 Sight radius 200
fp13 視界角度 FOV 90
fp14 探索距離 Unknown (exploration radius?) 50
fp15 探索角度 Unknown (exploration angle?) 120
fp16 振り払い率 Successful shake rate 1
fp17 振り払い力 Shake knockback 300
fp18 振り払いダメージ Shake damage 1
fp19 振り払い範囲 Shake range 120
fp20 攻撃可能範囲 Unknown (shock attack max range?) 150
fp21 攻撃可能角度 Unknown (shock attack max angle?) 25
fp22 攻撃ヒット範囲 Unknown (attack hit range?) 150
fp23 攻撃ヒット角度 Unknown (attack hit angle?) 25
fp24 攻撃力 Attack damage 10
fp25 視界高 Unknown (height visibility?) 50
fp26 探索高 Unknown (exploration height?) 50
fp27 ライフの高さ HP wheel height 50
fp28 回転最大速度 Rotation speed 10
fp29 警戒時間 Unknown (warning time?) 15
fp30 警戒ライフ Unknown 500
fp31 ライフ回復率 Regeneration rate 0.00001
fp32 LOD半径 Off-camera radius 300
fp33 マップとのあたりポリゴンの選定 Collision processing radius 250
fp34 ピクミンとのあたり Pikmin damage radius 50
fp35 石化時間 Petrification duration 1
fp36 ヒップドロップダメージ Purple Pikmin drop damage 50
fp37 地震気絶確立 Purple Pikmin stun chance 0 (0%)
fp38 地震気絶時間 Purple Pikmin stun time 10
ip01 振り払い打撃A Shake mode 1 – hit count 30
ip02 振り払い張付1 Shake mode 1 – Pikmin requirement 5
ip03 振り払い打撃B Shake mode 2 – hit count 35
ip04 振り払い張付2 Shake mode 2 – Pikmin requirement 10
ip05 振り払い打撃C Shake mode 3 – hit count 45
ip06 振り払い張付3 Shake mode 3 – Pikmin requirement 15
ip07 振り払い打撃D Shake mode 4 – hit count 50
Specific properties
ID Japanese comment Property Value
fp01 ローリング時間 Unknown (rolling time?) 3.5
fp02 出産間隔 ( sec ) Birth interval 2
fp Forest 1 Life HP on the Hole of Beasts 3300
fp 出産数 ( Max ) Max births until it falls asleep 50
fp 出産数 ( Min ) Min number of Larvae on the cave with which it will wake up again 25

Other information[edit]


See also: Grub-dog family#Naming.
  • Common name: Empress Bulblax. It is the female counterpart to the Emperor Bulblax, and is indeed a large Bulborb.
  • Japanese nickname: クイーンチャッピー?, lit.: "Queen Chappy".
  • Japanese name: デメマダラ(卵嚢肥大個体)?, lit.: "Spotted Bug-eye (specimen with enlarged egg sac)".
  • Scientific name: Oculus matriarcha, with Oculus being used in the scientific name for all Bulborbs, and matriarcha being similar to the English word "matriarch", which is the female leader of a community.
  • Internal names: Its internal name is simply queen.
  • Prerelease: In the unused early English script inside the game's files, Olimar refers to the Empress Bulblax as "Queen Bulborb", a straightfoward translation of the Japanese nickname, and the species name is misspelled as matriarhca.[1]

Names in other languages[edit]

Language Name Meaning
Flag of Japan Japanese クイーンチャッピー?
Kuīn Chappī
Queen Chappy
Flag of France French Reine Bulblax Bulblax Queen
Flag of Germany German Fürstin Knollenauge Lady Bulb-Eye
Flag of Italy Italian Bulbica Imperiale Imperial Bulblax
Flag of Spain Spanish Bulbo emperatriz Empress bulb


Pikmin 2[edit]

Pikmin 4[edit]


  • The Empress Bulblax may shed its skin; on the last sublevel of the Hole of Beasts, right underneath the Research Pod, there appears to be an Empress Bulblax skin on the floor.
  • It is impossible to wake up the Empress Bulblax in the Piklopedia, no matter how many Pikpik carrots are thrown at it. The only other enemies who will not attack in the Piklopedia are the Titan Dweevil and the Segmented Crawbster.
  • The Empress Bulblax is the only member of the Grub-dog family that does not kill Pikmin by eating them.
  • The creature resembles a real-life pregnant queen termite.
  • The Empress Bulblax gives live birth to its larval-form offspring. This is not only unique to the Pikmin franchise, but also to Earth lifeforms.
  • The Empress Bulblax's specific epithet, matriarcha, indicates that it is considered a different species from its offspring, the Bulborb Larvae (bambinii). How a parent of one species can bare the offspring of another is unknown, so this could actually be a mistake.
  • The Japanese Louie's notes mentions cooking the ovaries of the creature instead of its liver. This was also the case for the prototype version of Pikmin 2's English script.[2]

See also[edit]


  1. ^ Pikmin 2/Early English Script on The Cutting Room Floor
  2. ^ Pikmin 2/Early English Script/Louie's Notes on The Cutting Room Floor