Princess Shroob

"YOU INTERLOPERS... WILL BE CONSUMED!"

- Princess Shroob

Princess Shroob is the main antagonist of the game Mario & Luigi: Partners in Time. She is second in command of the alien race known as the Shroobs, although initially it appears that she is their leader. She set off a full invasion of the Mushroom Kingdom to make it their own.

''Mario & Luigi: Partners in Time
Princess Shroob had invaded the Mushroom Kingdom along with her sister Elder Princess Shroob because Planet Shroob was withering. After the Shroobs manage to get inside Princess Peach's Castle, they find Princess Peach, who had traveled back in time with E. Gadd's Time Machine. They attempt to capture her, but before they could, Princess Peach used the Cobalt Star to imprison Elder Princess Shroob, then she proceeded to scatter the shards of the Cobalt Star. Princess Shroob, however, managed to capture her. Despite this, the Shroobs seemed to have taken reletively good care of her.

In Baby Bowser's Koopa Cruiser, Princess Shroob is seen on a transmission, however she remianed hidden in the shadows to make it mysterious to the player on what she fully looked like. From Shroob Castle, she fired a missile, aiming for the Koopa Cruiser. Since the Koopa Cruiser was low on ammo, the missile shot down the airship as it set on a crash course for Baby Bowser's Castle.

Later on, in the Koopaseum, Princess Shroob was on stage to celebrate the conquest of the Mushroom Kingdom by feeding Princess Peach to Petey Piranha. However, Mario, Luigi, Baby Mario, and Baby Luigi had interupted her by getting onstage. Princess Shroob then ordered the Shrooboid Brat to defeat them. Mario and company eventually defeated the Shrooboid Brat, but after the fight, she commanded Shroobs with hammers to corner the four Mario bros. and break a hole under them, which lead them falling to the underground.

After falling underground, Mario and company set out to rescue Peach in Gritzy Caves. Once they did, she had a Shroob Mushroom attached to her face. They took her back to Princess Peach's Castle in the future. This princess was actually Princess Shroob, and had everyone fooled, even Bowser, who kidnapped her thinking she was Princess Peach. Bowser had brought her to Thwomp Volcano, and after he was defeated by Mario and company, the Shroob Mothership came and regained the princess. Mario, Luigi, and their younger selves followed, still thinking she was Princess Peach. Once they finally found who they thought was Princess Peach, Princess Shroob decided to reveal who she really was. She was about to get rid of them, but got blasted away by a disguised Kylie Koopa. This victory is short lived when she recovers and then dropped Mario and his friends off of the Shroob Mothership.

The four Mario bros. eventually make their way through a shroobified Peach's Castle and hijack a Shroob Battleship and engage the Shroob Princess in a dogfight with the Shroob Mothership. After blasting the Shroob Mothership out of the sky the Princess emerges out of it. She appears to have gone mad, declaring Peach useless, the kingdom was already hers, and that she will destroy them all, shouting "Destroy!" several times. She then enters battle with them.

Entering the battle she is protected by a levitating force shield that can only be destroyed by jumps. In it she either fires lasers where it is NOT a good idea to for both to jump at the same time unless both pointers are pointed to the ground. The player needs to see which lasers are pointed up or down to avoid. The second attack is to turn her forcefield into a giant spider mech and then jumps onto one of the bros, with the force shield looming overhead. She then shoots lasers onto the brothers that travel straight down and then enclose on the bro., though this can be countered by jumping. Failing to avoid this attack will cause a small amount of damage and is capable of knocking the target off-balance. Then she attempts to sit on the brother. She will shake the mech three times and then either laugh or go straight down. If she laughs, then the mech will delay before crushing the target. This can be countered by Hammer. This attack can cause Confusion.

After she is out of the mech or rather forced out, she has a couple more attacks. She always teleports madly before using an attack. One attack is to shoot one fast laser ball at a brother. The brothers have to jump. Another is standing in the middle then shooting multiple balls requiring a jump after the other. If she swings her right arm towards Luigi, Mario has to jump then Luigi or the babies, and if she swings her left arm towards Mario, Luigi has to jump, then Mario. Another is to stand above the brothers and throw an energy ball down. If she shoots with her right arm, it is to Luigi, and if she shoots with her left, it is to Mario. It can be countered with the hammer. All of these energy balls can cause Poison. Finally, the last attack is to throw an energy Star that goes around faster and faster and won't stop until it either hits, which can cause random stat decrease, or is stepped on. It eventually goes slower after a while and may go faster again. If she is pointing straight forward, it's to Mario and if pointing down, it's to Luigi.

Once she gets to the halfway point (damage-wise), she glows red, gets stronger, and uses multiple attacks in one turn. Also, the force field does two attacks each turn and regenerates in two turns. After beating the princess, she lies on the floor, near-death. When Baby Bowser puts together the Cobalt Star, she crawls to where the Mario brothers are and shouts that it is her sister's turn now to fight them. She then dies and, like previous bosses, brilliantly explodes.

The Cobalt Star shards are located in many places that Princess Shroob should have been aware of, such as the Vim Factory. It is unknown why she did not attempt to have the Cobalt Star restored and bring her sister back to power.

''Mario & Luigi: Bowser's Inside Story
In Mario & Luigi: Bowser's Inside Story, she and Elder Princess Shroob can be seen frozen in the background of a battle of Mario and Luigi against three Shroobs in Bowser's castle, implying that she survived the previous game (even though she exploded) but was frozen by the Koopa Troop for unknown reasons.