Athena lying nude in the wilderness after taking a mortal form.
Red Sonja was nude while she was possessed by Bhamothes.
Jana Sky-Born naked after escaping the Mer-Men.
Chaoschild was naked after being born from the body of Vampirella.
Dracula was stripped of his clothing while he was The Chaoschild's prisoner.
Some of the Vampires of Drakulon did not wear clothing.