Blacklight BB 1 is one of the blacklight-recolored versions of BB. His skin is colored yellow, has pink and blue stripes for his hat and shirt, purple hair, and pink eyelids, nose, and cheeks. He has black eyes, green irises, and white pupils.

Occasionally his face will be visible on the flashlight light. You have a limited amount of time to get rid of him by switching to UV mode on the flashlight (right-click while using the flashlight). If you do not do this in time, he will kill you.