Ultraman (1966): Season 35, Episode 11

35 - 11: Escape

Following the battle with Demaaga, Gento can not hide his confusion about the alien being that resides in his own body. That's when a meteorite flies in from outer space. It lands on Earth, evading the GGF's attempts to intercept it, and transforms into the kaiju Gebalga. It seemed that Earth Garon would have the upper hand in the fight until Gebalga revealed it's surprising ability.