Bowser Shell

The Bowser Shell is an item introduced in Mario Kart: Double Dash!!. Its acts like a Green Shell, except it makes other players lose their items if it hits them.

Koopa Kart: Double Trouble!! (2004)
The Bowser Shell is Bowser and Bowser Jr's Special Item in Koopa Kart: Double Trouble!!. It can be obtained from 1st to 6th place. When used, the Bowser Shell will act like a Green Shell, except it is much bigger, can bounce off walls more often, and makes players lose their items.