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- Ice (DC Comics)
- Icemaiden (DC Comics)
- Indigo (DC Comics)
- Infragirl (Tomorrow Syndicate member) (Image Comics)
- Insect Queen (DC Comics)
- Invisible Woman (Marvel Comics)
- Natasha Irons (DC Comics)
- Isis (DC Comics)
- Ichigo Momomomiya (Tokyo Mew Mew)
Read more about this topic: List Of Superheroines