Princess Shroob

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This article is about the primary antagonist in Mario & Luigi: Partners in Time. For her older twin sister with the same in-game name, see Elder Princess Shroob.
Princess Shroob
Artwork of Princess Shroob from Mario & Luigi: Partners in Time
Artwork from Mario & Luigi: Partners in Time
Species Shroob
First appearance Mario & Luigi: Partners in Time (2005)
Latest appearance Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey (cameo) (2018)
Princess Shroob, Mario & Luigi: Partners in Time

Princess Shroob is the main antagonist of Mario & Luigi: Partners in Time. She is second-in-command of the alien race known as the Shroobs (her older twin sister is the leader), although initially it appears that she is their leader, since the elder Princess Shroob was absent, trapped in the Cobalt Star by Princess Peach. She and her sister set off a full invasion of the Mushroom Kingdom to make it their own.


Mario & Luigi series[edit]

Mario & Luigi: Partners in Time[edit]

Princess Shroob and some Shroobs
Princess Shroob with five Shroobs

Princess Shroob invades the Mushroom Kingdom in the past along with her sister, the Elder Princess Shroob, as their home world was withering. After the Shroobs take hold of Peach's Castle, they find the adult Princess Peach, who had just used Prof. E. Gadd's time machine to visit the past castle. The Elder Princess Shroob attempts to capture her, but Peach uses the Cobalt Star that powered the time machine to imprison the Elder Princess Shroob before it shatters, scattering the shards across the Mushroom Kingdom. The younger Princess Shroob then ambushes and captures Peach. She sends a Junior Shrooboid into the future using the last of the time machine's power back to the future, where its appearance prompts the adult Mario and Luigi to investigate the past via timeholes.

As the assembled baby and adult Mario Bros. ride aboard Baby Bowser's Koopa Cruiser, Princess Shroob is seen in a transmission, largely obscured by shadows. From the newly converted Shroob Castle, she fires a Shroob missile at the Koopa Cruiser, which was too low on ammo to shoot it down; the missile strikes the Cruiser and leads to a crash landing in Baby Bowser's Castle.

Later on, when the Mario Bros. enter the Koopaseum, Princess Shroob appears on stage, in the process feeding Princess Peach to Petey Piranha. Princess Shroob then sends the Shrooboid Brat to fight the Bros. while she retreats; the quartet defeats the Shrooboid Brat, only for Princess Shroob to have a hole broken under them, where they fall into Gritzy Caves.

Princess Shroob on her throne

After encountering and defeating Petey Piranha, the Mario Bros. find Peach, who has a Shroob mushroom attached to her face - unbeknownst to them, she is actually Princess Shroob in disguise. They take her back to Princess Peach's Castle in the future, where the adult Bowser arrives to kidnap her, unknowingly saving the present Peach's Castle from domination by the Shroobs. Bowser brings her to Thwomp Volcano, where he is later fought and defeated by the Mario Bros.; the Shroob Mother Ship arrives and captures the disguised Princess Peach, with the Mario Bros. in pursuit, and Princess Shroob finally reveals herself once they find her. As she and the Shroobs are poised to defeat them, she is suddenly blasted away by a disguised Kylie Koopa, who is eventually left on Yoshi's Island, while the Bros. are dropped into Toad Town.

After the Mario Bros. assemble the rest of the scattered shards of the Cobalt Star, they eventually go through a Shroobified Peach's Castle. At the top of the highest tower, they hijack a Shroob Battleship and engage Princess Shroob aboard the Shroob Mother Ship, eventually downing it. After they return downstairs to examine the wreckage alongside Princess Peach, a furious Princess Shroob descends from the wreckage on a floating throne, declaring Peach useless and moving to finish the group off and take over the kingdom, shouting "Destroy!" as the Bros. prepare to battle her.

Upon defeating her, Princess Shroob lies battered on the floor as Princess Peach and the quartet of Mario Bros. spot the almost-whole Cobalt Star floating into the room. Princess Peach reveals that she has the final shard, and that she cannot let it be reassembled, confusing the adult Mario Bros.; Baby Bowser suddenly ambushes the group and snatches the shard, assembling the Cobalt Star despite Peach's protests. Princess Shroob then crawls into view, shouting that it is her sister's turn to defeat them now before her eyes go dim and she dies in a burst of sparks; the Cobalt Star then begins darting around the room before turning Baby Bowser into a Shroob Mushroom, and Princess Peach reveals the truth about the Star just before Elder Princess Shroob regains her true form.


Princess Shroob starts the fight in her levitating throne, which will cause non-aerial attacks to miss. Her throne generates a forcefield that completely nullifies all damage, but can be slowly weakened with enough attacks, starting off blue before changing to green, yellow, and then red before shattering. The force field's durability is based off of the number of individual strikes rather than actual damage dealt, so multi-hitting attacks such as Copy Flowers and Trampolines are effective.

While in the forcefield, Princess Shroob has two attacks. The first is to shoot lasers at both of the Bros. at the same time. Depending on whether the laser gun is pointing up or down, Mario and Luigi must either jump or remain in place to avoid the lasers, which she shoots multiple times in one turn. Princess Shroob can also attack using mechanical limbs sprouting from the underside of her throne. She will jump right above one of the Bros. and proceed to shoot multiple laser rings straight downward that enclose on the Bro targeted. The Bro must jump over each ring as it encloses, and the lasers could cause the Trip status effect. After the laser rings, Princess Shroob uses the throne to try and crush the Bro directly, which can be countered with the hammer as the throne comes down. If Princess Shroob cackles before landing on the Bro, she will stall for a bit before landing on them, which can throw off the player's counter.

Once the Mario Bros. disable her forcefield, her throne crashes to the floor and Princess Shroob is forced to attack on foot, making her vulnerable to ground attacks again. During this phase, she uses two different attacks. One is summoning a star projectile that encircles the arena, which the Bros. must jump over. Princess Shroob will telegraph with her hand who the star will target next, and the star will travel faster and faster around the arena until a Bro is hit, or if they can successfully jump on the star to destroy it. This attack can cause random stat decreases. Princess Shroob can also teleport randomly around the room, firing various energy balls at the Bros:

  • If she spawns in front of a Bro, she will fire a single energy ball at that Bro which must be jumped over.
  • If she spawns in the center of the arena, she will launch a wave of energy balls which both Bros. must jump over.
  • If she spawns on the top screen, she will launch an energy ball straight down, which can be countered with the hammer; If she throws with her right hand, it will target Mario, the left hand will target Luigi.

All of her energy ball attacks can inflict Poison if they hit, and can be safely stomped on. After 2 turns, the throne will repair itself and the forcefield will be reactivated. Once Princess Shroob has lost half of her health, she begins to glow red, indicating increases in both her speed and power. She will also begin to attack multiple times in one turn.

Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey[edit]

The younger Princess Shroob, the Elder Princess Shroob, and a Junior Shrooboid in Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey
Princess Shroob's and her sister's cameos in the game's remake

Princess Shroob makes a cameo appearance next to the Elder Princess Shroob during the optional boss fight of the Shroobs in Bowser's Castle, unlike in the original game, only the Elder Princess Shroob is barely seen.[1] Princess Shroob is also mentioned in the Shroobs' profile from the Bowser Jr.'s Journey mode.

Super Mario-kun[edit]

Princess Shroob in the Super Mario-kun. Mario, Luigi, Baby Mario, and Baby Luigi are also visible. From volume 37.
Princess Shroob and the Shroob Mother Ship

Princess Shroob appears in the Mario & Luigi: Partners in Time adaptions in the Super Mario-kun manga, serving the same role as she does in the game.

Super Smash Bros. Ultimate[edit]

Princess Shroob appears as an Advanced-level, neutral spirit in Super Smash Bros. Ultimate. The battle to unlock the Princess Shroob spirit is a stamina battle against Princess Peach. After taking a high amount of damage, Peach becomes giant and her attack power increases, which is possibly to act as a reference to her older twin.

General information[edit]

Physical appearance[edit]

Compared to other Shroobs, Princess Shroob has a tall, human-like build, though keeping their general face features and two-fingered hands. Her mushroom cap has another, smaller one on top, looking like a bun hairstyle; the spot in the middle has the shape of a crown and a round black jewel on it. She also has large white lips and often carries a metal chalice with two horn-like protuberances at the base and round red gems around it. She wears a magenta dress similar to Peach's, with slightly darker panniers and a large high collar; the hem and the sleeves have a lighter swirl pattern, while on her chest is an oval shaped brooch with a black gem and a silver ring around it. She also wears small, round green earrings and long white gloves. She is also frequently seen holding a blue and yellow microphone with a visibly broken cable.

Powers and abilities[edit]

As the commander of the Shroobs and one of the final bosses of Mario & Luigi: Partners in Time, Princess Shroob is powerful and she often uses the Shroob army to her needs. By herself, she demonstrates various energy abilities, such as throwing energy balls, flying, and controling stars in her boss battle. Princess Shroob also shows technological skills via the use of her throne. In addition, she can disguise herself as Princess Peach to fool the characters, despite the disguise having a Shroob mushroom on her face.


As the primary antagonist of Mario & Luigi: Partners in Time, Princess Shroob is a militant conqueror and is shown to be highly aggressive (e.g. shooting down the Koopa Cruiser), though most of her dialogue is undecipherable. In addition, the Shroob race acts as her loyal subordinates, serving her drinks and always following her commands. She is willing to go to any length to conquer the Mushroom Kingdom, such as attacking Toad Town and draining its citizens of their vim. She also takes revenge on Peach for capturing her twin sister and imprisoning her in the Cobalt Star by capturing her, then planning on feeding Peach to Petey Piranha in front of a Shroob audience.

It is unclear whether or not Princess Shroob cares for her older sister; she did not attempt to rebuild the Cobalt Star the Elder Princess Shroob was trapped in, and referred to the Mushroom Kingdom as belonging to her rather than her sister.


Profiles and statistics[edit]

Mario & Luigi: Partners in Time[edit]

Mario & Luigi: Partners in Time enemy
Princess Shroob
Princess Shroob HP 3000 (1700) POW 120 (180) Defense 130
Experience 0 Coins 0 Speed 60 (120)
Location(s) Shroob Castle Role Boss Item drop None – 0%
None – 0%
Level 29 Battled by Everyone
Notice: Stats in parentheses are from the Japanese and European versions (if they differ from the original American release).

Super Smash Bros. Ultimate[edit]

#107 Princess Shroob
Artwork of Princess Shroob from Mario & Luigi: Partners in Time Series/game Mario & Luigi Series
Type Primary
Slots 3
Class Advanced
Strength / effect(s) Neutral
How to obtain Spirit Board
Spirit battle Opponent(s) Giant Peach

Rule: Giant; Attack Power ↑

  • The enemy is giant when the enemy's at high damage
  • Stamina battle
  • The enemy has increased attack power when the enemy's at high damage
Stage Princess Peach's Castle
Song The Grand Finale


While Princess Shroob mainly speaks in the Shroob language, the quotes below are her lines translated in-game:

  • "(NOW IT'S YOUR TURN... SIS... TER!)"

Names in other languages[edit]

Language Name Meaning
Japanese ゲドンコ姫
Princess Shroob

French Princesse Xhampi
Princess Shroob
German Prinzessin Shroob
Princess Shroob
Italian Principessa Shroob
Princip. Shroob (in battle)
Giovane Principess Shroob[2]
Princess Shroob
"Princip." is short for Principessa ("Princess")
Young Princess Shroob
Korean 게돈코공주
Gedonko Gongju
Princess Shroob

Russian Принцесса Хомор
Printsessa Khomor
Принцесса is "princess" and Хомор is a part of мухомор (mukhomor, "fly-agaric")

Spanish (NOA) Princesa de los champizoides
Princess of the Shroobs
Spanish (NOE) Princesa Shroob
Princess Shroob


  • In the North American version, when the player defeats Princess Shroob, the victory screen appears showing that no Experience Points or coins are awarded. In other versions, the battle screen immediately fades out to the field after the KO animation.
  • She is the only main antagonist in the Mario & Luigi series to not have any additional forms.


  1. ^ Sleepant (January 23, 2019). Mario & Luigi: Bowser's Inside Story 3DS - Shroobs Boss. YouTube. Retrieved February 9, 2024.
  2. ^ "È stato allora che la giovane Principessa Shroob mi ha fatto prigioniera!" – Princess Peach. Mario & Luigi: Partners in Time.