Not to jump on the mule-list bandwagon or anything ...


X-Men / Marvel

Alias Mystique
L a d y . P o l a r i s
Codename Destiny
Karolina in the Sky


Star Trek

The EMH
Designation Seven of Nine


Batman (Batman Beyond)

Dee Dee Delia
Dee Dee Deidre


Hellboy

Warrior Prince Nuada
Benevolent Princess Nuala