The Beanstar is a small yellow star with a green outline. When it is awake, it is smiling. However, when it hears the wrong voice, it turns red and looks angry.
It is central to the plot of the game, as Cackletta wants to steal it. It can grant wishes, but it can only be awoken by someone with a pure voice. Since Princess Peach is the only one in the world with a voice so pure, Cackletta steals her voice and uses it to wake the Beanstar. However, the Beanstar shatters into four pieces. when Cackletta uses Peach's voice on it. Later, Prince Peasley explains that Cackletta stole Birdo's voice instead of Peach's, causing the Beanstar to shatter. Birdo was disguised as Peach by magic. The Bros. then need to collect the pieces of the Beanstar, which are scattered around the kingdom. The pieces are located in Gwarhar Lagoon, Harhall's Studio, Yoshi Theater, and Chucklehuck Woods. After the four pieces are reunited, Mario and Luigi are contacted by Bowletta, who tells them to take the Beanstar to Joke's End, where she will obtain it. Peasley gives them a Fake Beanstar so that they will not have to give Bowletta the actual Beanstar. However, this plan does not work, and the real Beanstar is taken. In order to rescue Peach and obtain the Beanstar, Luigi disguises himself as the princess. Luigi says that the Peach they have is the fake. The villains fall for it, and Peach is returned to Mario. Luigi is then discovered by Bowletta and Fawful, and he flees the Koopa Cruiser, the ship that they had used to carry the Beanstar, taking it with him.
Go, Goomba, Go! • This Beans War • For the Love of Hammers • Winged Traitors • The Hoohoo Melee Brigade • The Great Hammer Barrage • Don't Fear Flying Foes • Goombas vs. Goombas • The Amnesiac Koopa King • Goombas Galore
Turnip Tantrum • Minions vs. Minions • Hunger Pains • A War of Shy Guys and Flybys • Battle Tail • Beanbean Crossfire • The Rival Trio • Larry's Fortress • Captain Shy Guy Trial • Professor E. Gadd's Research • Oh, Hi, Shy Guy! • Shell Brigade, Move Out!
The Sweet Smell of Soda • Deep Trouble • Forest Masquerade • Reclaim the Red Goblet! • Gold Beanie Appears • Invisible Leaderership • Ice Guys Finish Last • The Tough-As-Nails Squad • Forest Fight • Popple's Partner • Captain Goomba Trial (Gold) • Shy Guy Goes Overboard • King of the Boos
A Dry Bone to Pick • The Trouble with Toads • Flying Beans in the Desert • Find the Invincibility Mushroom! • Gold Beanie Spotted! • Silly Ol' Goomp • Ice Bros. Feel the Heat • The Lonely Koopa Troopa • Toad Rescue • Captain Koopa Troopa Trial • Popple's Partner, Part 2 • A Goomba Tail • A Muster of Masks
Goombas Unite • Gather the Cruiser Parts! • Power Play • Spear Party on Ice • Monochrome Explosion • Gold Beanie Fights Back! • Return of the Koopa Cruiser • The Trio's Last Stand • Captain Boo Trial (Gold) • Boo Party! • Shy Guy Barrage
Fireball and Boomerang Crossfire • Chain Chomp and Spike Stomp • A Tale of Tails • Double Trouble Koopaling Caper • Pokey Panic • Rumble in the Castle! • Gold Beanie's Final Stand • Goomba's Worth • Showdown Time!! • Believe in Bowser • Captain Boo Trial • The Mightiest Minions • The Beastly Bean Battalion
• ⋆-Enemy, boss, or stat exclusive to the main game. • ⋆⋆-Enemy, boss, or stat exclusive to Minion Quest: The Search for Bowser. • ⋆⋆⋆-Enemy variants differ in Mario & Luigi: Superstar Saga + Bowser's Minions.