Koopaseum

The Koopaseum is a large, colosseum-like structure in the middle of the Gritzy Desert that appears in Mario & Luigi: Partners in Time. Its name is a portmanteau of "Koopa" and "Colosseum". In the past, the Mario brothers and the Baby Mario brothers came to the Koopaseum looking for Princess Peach. Once the brothers entered through the secret entrance, they saw Peach being fed to Petey Piranha on Princess Shroob's commands, with Kylie Koopa being kidnapped by the Shroobs after.

In the Koopaseum, the brothers enter the arena to a large audience of Shroobs and fight four Shroobs, three of which the brothers (except Luigi) defeat, before fighting the Shrooboid Brat. After the brothers defeat it, they are taken down by many Shroobs with hammers. The brothers are then dropped to Gritzy Caves, which is directly below the Koopaseum.

Enemies

 * Shrooboid Brat (boss)

Names in other languages
Koopaseum Koopaseo