Shroob Mother Ship
Shroob Mother Ship is the ship that Princess Shroob uses to travel a long with her Shroobs. It looks like a huge pink Shroob UFO and may be the spaceship the Shroobs came to Mushroom Planet in. The Shroob Mother Ship appears many times over the course of the game.
After Mario and Luigi defeat Bowser and Baby Bowser and saving Peach in Thwomp Caverns, the Shroob Mother Ship sucks Mario, Luigi, the babies (Baby Mario and Baby Luigi) and Peach in. Inside the Mario Bros. find out that Princess was dressed as Peach! When Princess Shroob is about to suck the vim out of Mario and company, Kylie Koopa, dressed as a Shroob, saves the brothers. The Mario Bros. along with Kylie Koopa Troopa go to the second floor, and put a key, that Kylie got in a key hole only to drop them in Toad Town, which is destroyed. Kylie, however, lands in Star Hill.
Later in the final level, the Mario Bros. use a Shroob UFO to destroy various the Shroob Mother Ship using various Shroob UFOs, and then Mario and Co. fight against the Shroob Mother Ship. After defeated, the Shroob Mother Ship will fall down, breaking part of the Shroob Castle, and when the Mario Bros. go to it, the final battle begins!