Pretty sure this isn't the most original character, but anyway.

While reading Journey quest, My mind made up this character that can get through small gaps and grates or chain link fence, if she comes across one, by momentarily turning into a dark puff of smoke. But she has to go through them at speed and is not a cool badass so she usually slide and or tumble on the other side. Very excitable and panicky. Be nice to her and she'll be on board with travelling with you and the rest of your party. Otherwise she wanders alone mostly to find food and maybe something shiny once in a while.

Dunno what I'll use her for, if I do. Could be a quest, could be a game once I get around to try and do those.