Gilly the Double Rainbow Trout

Gilly the Double Rainbow Trout is a supporting character who so far has only appeared in Double Rainbow Trout. She was first seen talking to Orange about how she turned out to be a double rainbow trout. Orange could tell that she was not like the other trout because of her optimism. She then found out that she was related to Marshmallow because her her great grandmother was a double-stuffed oreo. Marshmallow then started sharing his family tree and history. However, their conversation was "cut short" due to the knifing of the other rainbow trout, but Gilly was able to make a miraculous escape due to her rainbow flying abilities. It is revealed towards the end of the episode that she was at a family reunion with Marshmallow. It is possible that she will appear in future episodes.