Girlzilla is a giantess humanoid kaiju created by a nuclear fallout incident in French Polynesia. Girlzilla was formerly known as Samantha Loud, but died in the nuclear as she gets reincarnated into a giantess-dinosaur humanoid. She is happened to be Zach Loud’s biological sister, and she’s heading towards New York to get her brother back if it means killing the other humans.