How do you unlock Ebirah in Godzilla Unleashed?

You can't unlock Ebirah in Godzilla Unleashed. Ebirah is not a playable character in the game.

The playable characters in Godzilla Unleashed are:

* Godzilla

* King Ghidorah

* Mothra

* Rodan

* Anguirus

* King Kong

* Mechagodzilla

* Gigan

* SpaceGodzilla

* Destoroyah

* Godzilla (Burning)

While Ebirah is a well-known kaiju from the Godzilla franchise, he was not included in the playable roster for Godzilla Unleashed.