"Exodia" was, at first, a beast of such incalculable and intimidating might that he was split up into five distinctive parts, each one of them chained and sealed away by magic from all the other monsters (hence "the Forbidden One"). This would prevent his power from ever being used again. Shimon used Exodia against Zorc Necrophades, against whom he was equal; however, "Exodia" was defeated because he drew his power from Shimon, a single mortal man, whereas Zorc has his own power source.
Powers and Stats
Name: Exodia the Forbidden One
Classification: Spellcaster / Effect type, Level 3, DARK
Speed: Massively Hypersonic+ (Kept up with Zorc)
Lifting Strength: Superhuman
Striking Strength: Large Planet Class
Durability: Large Planet level (Traded Blows with Zorc)
Stamina: Is limited to the Life force of the person who Summoned him.
Standard Equipment: None notable