Motley Bossblob's Encore
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Motley Bossblob's Encore or World 
Bowser-A is a boss-only level found in World Bowser. It is unlocked by completing Grumblump Inferno and completing it and Hisstocrat Returns unlocks The Great Tower of Bowser Land.
Layout
The player starts out on a long platform. At the end is a ? Block where the player can receive a Double Cherry. The player needs to jump on to the gondola that carries them to the boss fight. This is where Motley Bossblob will be encountered. He will turn into a golden clown-like boss. To attack the player, he will continuously bounce around trying to land on Mario, each of his jumps producing shockwaves. After a few bounces, he will disassemble from the blobs and will drop a Double Cherry. The player needs to jump on his head three times when he is in his regular-sized form to defeat him. After he is defeated, a Warp Box will take the player to the Goal Pole.
Green Star
- Green Star 1: The level's only Green Star appears after the player defeats Motley Bossblob.
Enemies
- Motley Bossblob (boss)
Names in other languages
| Language | Name | Meaning | Notes |
|---|---|---|---|
| Japanese | ボスブンレツふたたび！！[?] Bosubunretsu futatabi!! |
Motley Bossblob again!! | |
| German | Boss-Blubbarrios Zugabe[?] | Motley Bossblob's Encore | |
| Italian | Rivincita con Boss Giullabolla[?] | Rematch against Motley Bossblob | |
| Portuguese | Desforra de Boss Globolha[?] | Motley Bossblob's vengeance | |
| Russian | Блобобосс разбушевался[?] Bloboboss razbushevalsya |
Motley Bossblob became unruly | |
| Spanish | El burbufón jefe contraataca[?] | Motley Bossblob strikes back |
