Ebirah

Ebirah was a giant lobster mutated by nuclear waste. He guarded an island controlled by terrorists called the Red Bamboo. He would destroy ships coming too close to the island. The Red Bamboo used a special fruit extract to protect themselves from the lobster. Fortunately, a group of people stranded on the island found Godzilla sleeping on the island and woke him up, leading to him injuring Ebirah. The next day Ebirah destroys a Red Bamboo ship that didn't use the fruit extract, and Godzilla comes again and rips off Ebirah's claws, causing him to flee.

Ebirah would return, this time mind-controlled by an alien race known as the Xiliens. Ebirah attacked Tokyo Bay, but was nearly destroyed by maser cannons. However, the Xiliens transported him away and claimed they saved Earth from the monsters. When the humans found out the Xiliens were behind the attack, they released the monsters again. Luckily, Godzilla was freed from his icy prison and defeated the monsters. Ebirah was sent to fight him in Tokyo Bay, meeting up with another monster, Hedorah, though it is unknown if Hedorah was part of the invasion. They are blasted twice by Godzilla's atomic ray and killed, with Ebirah accidently stabbing Hedorah in the eye.

Ebirah was one of the weaker monsters, as he never stands a chance when Godzilla fights him unlike with most other monsters like Destoroyah or King Ghidorah.