Oni (Urusei Yatsura)

The Oni are a sapient humanoid species from the planet Oniboshi.

Biology
Members of this species are humanoids with fangs, pointed ears and small horns. Their hair color is often green. They can usually fly, despite having no visible means of doing so. Other abilities such as electrocution, fire-breathing, shapeshifting, etc., seem to vary on an individual basis.

Oni powers originate from their horns: losing their horns causes them to lose their abilities (including the capacity to fly), and stay powerless until the horns grow back.

Oni become inebriated if they consume umeboshi (i.e. dried Chinese plums).

Culture and society
The Oni are a spacefaring civilization with access to highly advanced technology. Their clothing is typically orange with black stripes. Like many other species, Oni culture includes marriage.