Baltan Seijin, known as バルタン星人 in Japanese, is one of the most iconic alien villains in the Ultraman series. Debuting in the original 1966 Ultra Series, Baltan Seijin is a race of extraterrestrial beings recognized for their insect-like appearance, clawed hands, and ability to multiply or shrink. As recurring antagonists, they frequently challenge Ultraman and humanity, symbolizing the threat of invasion and destruction. Their haunting laugh and mysterious motives make them memorable foes in the Ultraman universe.