In Gremlins 2: The New Batch, Greta was born after Daffy, George and Lenny were drenched by shower water. Greta initially looked like a typical Gremlin, but after drinking a formula designed to change one's sexual characteristics, she was granted stereotypically feminine characteristics.
For any fan of the 1990 blockbuster sequel, this Greta Gremlins 2 The New Batch T-Shirt is a must have!