Mario and Luigi: Partners in Time/Bosses

Baby Bowser	HP: 7; the first battle with Baby Bowser is more of a tutorial than a Boss battle.
Juvennile Shrooboid	HP: 13; the battle with this strange creature is more of a tutorial than a Boss battle.
L33T Brothers	HP: 100 Each
Swiggler	HP: 250
Kamek	HP: 450
Sunnycide	HP: 500
Shrooboid Brat	HP: 900
Petey Pirahna	HP: 1300
Mrs. Thwomp	HP: 500
Bowser and Baby Bowser	HP: 1200 (bowser) 700 (Baby Bowser)
Commander Shroob	HP: 1600
Adult Shrooboid	HP: 950, then 1150
Shrowser	HP: life meter contains 10 shroob heads. The actual final boss of the game, he is just Boswer revived with the Power of elder Princess Shroob. This is an out of the ordinary battle. You cannot attack shrowser, instead You have dodge all of his attacks. All of he dodged attacks then return and damage the ghost of Princess Shroob's Twin. Once the life meter is depleted the battle is over.