Kamella

Kamella is a boss in Super Mario Galaxy. She is a magikoopa and resembles Kammy from the Paper Marioseries. When you battle her by shooting fire balls you need to hit her by jumping or attacking a Koopa Troopa and then use its shell to throw at Kamella. After you hit her the second time she summons magikoopas to the ship. You also verse her again in another Galaxy but this time there are no Koopas on the ship instead Kamella shoots fire balls and green Koopa shells.