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| Obadiah Stane |
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| The Orb |
| The Organizer |
| Orka |
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| Ox I |
| Ox III |
| Ox IV |
| Jackal |
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| Jaeger |
| Jamie Braddock |
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| Jonathan Tremont |
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| Inheritor |
| Invincible Man I |
| Ion |
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| Unus the Untouchable |
| Urthona |