Mokuba
Kaiba's little brother, usually taken hostage when an enemy wants something from Kaiba.
Pegasus,the Ghouls,and Noa have all had mokuba for a hostage at one time.
shut up mokuba
A catch phrase of Seto Kaiba, usually directed towards his younger brother Mokuba Kaiba. It is used to tell the person it is directed at that they are very annoying and that they should remain quiet.
Mokuba: Seto I’m in horrible pain
Seto: Shut up Mokuba
Seto: Shut up Mokuba