These Lightbulb-like Humanoids are a Sapient Race of an unknown species.
Biology[]
They have Yellow Skin, Brown Clothing and a Tall Skinny head, similar to the greys and also hands with 3 fingers. Some of them have their tall skulls and nostrils on their faces which they can smell anything. However, some of them presumably have teeth implying that they eat or drink.
Denkyu's Species are Resistant to Electricity, even though they cannot be tased or electrocuted to death, just like the Yellow Pikmin.
History[]
The Artwork indicates that he nearly got run over by a car by accident. However, he came all this way to Earth only to die like a squirrel, then Seth Macfarlane steals his likeness and recolors it grey. Indignity after indignity.