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.
by Seth November 11, 2003
1 more definition
Scott Fahley's ex-girlfriend's younger sister, who is a wild, demonic, boyish young girl. Resemblance to Mokuba was uncanny, right down to the hair and voice.
Holy shit! That shim is Mokuba from Yu-Gi-Oh
by The Winged Dragon of Ra April 29, 2004