Save/Swap a Character: Mario & Luigi: Dream Team Bosses (winner: Antasma)

Danger
Giant Bowser
Dreamy Bowser
????
Kamek
Elite Trio
Sorrow Fist
Popple
Bowser Jr.
Grobot
Heavy Zest
Earthwake
Torkscrew

Safe
Thunder Sass
Big Massif
Mount Pajamaja
Antasma
Robo-Drilldigger
Zeekeeper

Swap (5)
Dreamy Mario
Pi'illodium
Smoldergeist
Mammoshka

Out
Wiggler
Bowser
Beef Cloud
 
Danger
Giant Bowser
Dreamy Bowser
????
Kamek
Elite Trio
Sorrow Fist
Popple
Bowser Jr.
Grobot
Heavy Zest
Earthwake

Safe
Thunder Sass
Big Massif
Mount Pajamaja
Antasma
Robo-Drilldigger
Zeekeeper
Torkscrew

Swap (5)

Dreamy Mario
Pi'illodium
Smoldergeist
Mammoshka

Out
Wiggler
Bowser
Beef Cloud
 
Danger
Giant Bowser
Dreamy Bowser
????
Kamek
Sorrow Fist
Popple
Bowser Jr.
Grobot
Earthwake

Safe
Thunder Sass
Big Massif
Mount Pajamaja
Antasma
Robo-Drilldigger
Zeekeeper
Torkscrew
Elite Trio
Heavy Zest

Swap (2)

Dreamy Mario
Pi'illodium
Smoldergeist
Mammoshka

Out
Wiggler
Bowser
Beef Cloud
 
Danger
Giant Bowser
Dreamy Bowser
Kamek
Popple
Bowser Jr.

Safe
Thunder Sass
Big Massif
Mount Pajamaja
Antasma
Robo-Drilldigger
Zeekeeper
Torkscrew
Elite Trio
Heavy Zest
Sorrow Fist
Grobot
Earthwake
????

Swap (ready)

Dreamy Mario
Pi'illodium
Smoldergeist
Mammoshka

Out
Wiggler
Bowser
Beef Cloud