Trait: No Panties
This character wears no panties or any other form of lower body undergarments even though they are otherwise clothed. In Japan it's shortened to 'Nopan' when a girl wears a skirt with no panties. Sometimes called 'Commando' or 'Going Commando' in the west.
Do not use this trait related to sex scenes where a character's lack of undergarments are briefly shown. Use it on occasions where a character's lack of panties is revealed as part of the story or character design.