Royal Plug

The Royal Plug is an enormous plug found in The Super Mario Bros. Super Show!. It is used to plug a hydroelectric dam, which the source of Rap Land's electricity. In the episode "Bad Rap", Rappin' Koopa took over the Rap Land. This prompted Mario to pull the Royal Plug, cutting Rappin' Koopa's electricity supply and breaking the hypnotic trance on the citizens of Rap Land.