Sunevian (Outer Space Jitters)

Sunevians are a sapient humanoid species from Sunev, which is Venus spelled backwards, who intented to invade Earth with an army of Zombies.

Biology
Externally, Sunevians are indiscernable from Humans. Internally, they have currents of atomic electricity instead of blood, implying that they are biomechanical or possibly robotic, although said biomechanical parts are entirely internal, as their external bodies bear flesh. When given extra charge, they are able to electrocute others by contact. Sunevians are also known to contain "batteries," presumably in place of an organic heart, which power their bodies and allow them to live. They are able to eat clam shells, capable of easily chewing the hard substance. In place of water, they drink battery acid, which can recharge them, and it is possible that the food they eat provides no actual sustenance. Water itself can short circuit them, disabling them as their bodies spark out.

Prehistoric Sunevians
"Prehistoric men," presumably Sunevian ancestors, are also humanoids, standing notably taller than Humans, bearing large, wide noses, sharp lower teeth protruding out of their mouths, and large, semi-pointed ears, somewhat resembling Neanderthals. It is unknown if these prehistoric Sunevians are also biomechanical.

Culture and society
Sunevians have an advanced imperialist society, although they appear to have not established proper contact with other species until meeting the Stooges. They were also known to regard the Stooges as "terrible specimens" of Humans. The Sunevian leader is known as the Grand Slitz of Sunev, whose power appears absolute. Benath him is the commander of the Sunevian military, known as The High Mucky Muck. The Grand Slitz wears an Earth-like dark formal suit, with a sash bearing a white stripe, while The High Mucky Muck wears ornate Earth-like military regalia, including epaulettes and a peaked cap with a feather. Sunevian females are known to wear black sparkly dresses, and Sunevians are also known to use small Moai-like statues as decorations. While Sunevian soldiers exist, wearing uniforms resembling Prussian military uniforms, Sunevians invested in the creation of an army of undead soldiers, at least by the time of the planned invasion of Earth. Formal Sunevian meals consist of clam shells and battery acid.

Technology
Sunevian technology is known to be more advanced than Earth in every regard. Notably, Sunevians have created devices capable of giving themselves immortality, seemingly by giving their batteries a greater charge. These devices can come in wearable forms, taking the shape of a headpiece connected to a belt, but this gives the Sunevian wearer enough charge to electrocute any non-Sunevian that touches them. To negate this, they either flip a switch on their belts, or have the other person hold a specially-made sash, which makes them immune to the current. The technology can also be used to resurrect the dead and turn living beings into zombies.

Appearances

 * Outer Space Jitters (1957)