Yoob's Belly

The Yoob's Belly is a location in the game Mario & Luigi: Partners in Time. During the events of the game, Mario, Luigi and the Baby Mario Bros. found Kamek and Baby Bowser, who had the Cobalt Star Shards they needed. After beating Kamek, they pursued Baby Bowser, who had ran off. But, while trying to get the Cobalt Star Shards (which Baby Bowser had eaten), a few Shroob UFO's had passed by, and noticed them. They headed off, and made the Yoob (who was climbing the mountain) grow humongous (even more so). He was now big enough to see the group, and he proceeded to eat Baby Bowser, and the four Mario Bros. Now inside the Yoob, the brothers had to find a way out, and at the same time find Baby Bowser and rescue the Yoshis. After rescuing a few Yoshis, they managed to push a Chomp Rock down a small passage in the Yoob, widening it, allowing them to proceed. Eventually, they found out that the Yoob also has a Bio-engineered factory inside it, which traps Yoshis in Yoob eggs. This will soon transform them into Yoob's if they aren't freed in time. The four soon find a Toad named Toadbert. He was on the Time Machine alongside Peach and Toadiko, but can't remember a single thing about what happened to her. Except for one thing, a picture he drew of Peach battling Princess Shroob. The Brothers proceed to the end, where they find the Sunnycide, who is blocking their exit, and looking after the Yoob eggs. After beating the monstrosity, the passage opens, and the Yoshis, Toadbert, Baby Bowser and the four Mario Brothers exit. Yoob, having its source of energy (the Yoob eggs) gone, "deactivates" and just lies on the mountainside. The group can go back into the Yoob anytime in the game, incase they missed something.

Interestingly, if the Baby Mario Bros. dig underground while in the Yoob, the player can see the Yoob on the Top Screen, suffering in pain.