Ebirah

Ebirah is a giant lobster that first appears as an opponent of Godzilla in Godzilla: Rulers of Earth and later makes an appearance in the miniseries Godzilla: Cataclysm.

Name
Ebirah's name comes from ebi, the Japanese word for "shrimp," even though Ebirah is actually a lobster. The ra at the end of his name is simply a common last syllable in kaiju names.

Appearance
Ebirah is a giant red lobster with one claw that is considerably larger than the other, red eyes on top of stalks, a pointed nose, antennae, and a segmented body ending in a tail.

Personality
Ebirah's motivations are unknown, but he seems to be incredibly aggressive as shown when he abruptly attacked Godzilla from underwater while the latter was simply swimming home after a battle.