First appearance: Mothra (1961)
Mothra isn't known for her fighting. She (yes, it's a girl kaiju) has got some strong abilities but doesn't use them as often as her pugnacious male colleagues. But she has a mystique that nobody can touch. Mothra is worshiped as a goddess by natives of Infant Island, and has two cute, tiny priestesses (called Shobijin) who speak for her. Mothra lays an egg that is always winding up in the wrong hands, and when she bites the dust, the egg hatches in a Phoenix-like cycle. You might kill Mothra, but she never really dies.