Dry Bowser
Dry Bowser is a boss in New Super Mario Bros. He is the undead, Dry Bones form of Bowser. He is fought in World 8. He makes an appearance as a unlockable driver in Mario Kart Wii classified as heavy-weight character.
Origin
Dry Bowser was accidentally born in the game's first castle, when a short fight with Bowser ended with Bowser being dropped into a pit filled with lava. The lava reduced the once-mighty king to a skeleton, leaving his son, Bowser Jr., temporarily in command of the Koopa Troop.
Combat
To defeat the skeletal monster, Mario must dodge Bowser's attacks, which include breathing small flames and throwing his own bones, and wait for Bowser to make a high jump. Mario must then run under Bowser and hit the Skull Switch, breaking the bridge to bits and sending Bowser into a very deep pit. If Mario is in Shell Mario form, he can defeat him by performing the Shell Dash against him three times. As Mega Mario one stomp is enough.
Bowser Reborn
In New Super Mario Bros. the remains of Dry Bowser were thrown in a cauldron filled with special ingredients Bowser Jr. had put which turns Dry Bowser back into his original form, but now Bowser is larger than before, and in a way resembles Mega Mario.
Dead Driver
Dry Bowser makes his first playable appearance in Mario Kart Wii. He is a heavy-weight driver along with his living counterpart Bowser. He seems to have a terrifying roar in this game. He can be unlocked by beating all new cups on 150cc with at least 1 star.