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- Obsidian
- Off-Ramp (member of Young Heroes)
- Offspring
- Ohm
- Omen
- Orca
- Outburst
- Outlaw (member of the Suicide Squad)
- Overthrow
- Owlwoman
Read more about this topic: List Of Metahumans In DC Comics
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Read more about this topic: List Of Metahumans In DC Comics