Alien Baltan (バルタン星人, Barutan Seijin^?) is a race of alien creatures originally featured in the 1966 tokusatsu TV series, Ultraman. their first appearance was in Episode # 2, "Shoot the Invaders!" The Baltan aliens have been considered Ultraman's most popular foe. A Baltan recently appeared in episodes 33 and 34 of the Ultra series, Ultraman Max. The race's trademark is their sinister laugh.

Baltan's epithet is "Space Ninja" (宇宙忍者, Uchū Ninja^?).

His height is around 50 Meters tall. He weighs around 15,000 Tons. He is very weak against Spacium substance in Mars and Ultraman's Spacium Ray.

The Baltan-Seijin have several powers at their disposal. they can fire either explosive machinegun style white beams or repelling red beams from their giant claws, or white freezing beams, a red/white energy ball, or basic beams. To confuse and bewilder an enemy, Baltan-Seijins can also project multiple, fake illusions of their bodies like Ninjas. Baltans can also hypnotize or possess human beings and use them as translators for communication. Also, when one Baltan suffers enough damage, it can shed its outer skin. They can teleport over short distances. Multiple microscopic or human-sized Baltans can fuse into a single, larger Baltan form.