Originally from Dragonball Z Abridged, Ghost Nappa appeared in "Final Deathstination" as one of Florence's ghost monsters, and later appeared after the stinger at the end of the episode, commenting on everyone's hair (though he likes Odion), and when he sees Mokuba, he believes him to be a rare Pokémon. Later, in "Kaiba's Real Father - Conclusion", it is revealed that he is Mokuba's father.
He makes a reappearance in "Joey Wheeler Ace Attorney" as one of Johnson's "celebrity witnesses" to testify against Joey Wheeler. However, he calmly stated that "[he had] never met the gentleman in question".
Ghost Nappa is voiced by takahata101, who voiced him in Dragon Ball Z Abridged.