E-050 was discovered by E-039 when Wario's Cafe was in development and ready to open in a week in the second timeline. It has appeared in the Kitchen, Backdoor, Basement, Bathroom and Attic. It is unclear if this entity symbolizes anything or anyone or its purpose.
E-050 is a humanoid shadow that may change form at will. It's unclear what its objective is, nor it's unclear if its possible to interact with. It can be seen on video survaillence, but not directly or with a photograph, as it seems to avoid these interactions.