The Calico discovered an island on the one night it became visible again after thousands of years of invisibility. The Siren Sisters who inhabited the island wanted to have the crew prisoner for all eternity, but Godzilla arrived to prevent that. The Chimera was accidentally released and the two began battling, but the Chimera was no match for Godzilla and was pushed back into its prison. Later, after capturing most of the crew, the Siren Sisters all combined into one to awaken and control the Chimera. When Chimera gripped Godzooky, Pete managed to awaken Godzilla who started to fight Chimera again. Knowing the Chimera couldn't beat Godzilla alone, the sirens joined with the Chimera to increase its power. This strength made no difference to Godzilla, who tricked it into falling off the cliff and diving into the sea, awakening the Calico crew.
- Chimera can release a deadly stream of fire from its maw.
- Chimera can grow from human-sized to Godzilla-sized.
Will be destroyed if it enters water, transforming into smoke.
- In the original Greek mythology, the chimera was a female, fire-breathing, three-headed monster, with the head and forelegs of a lion, the hindquarters of a goat, a goat's head emerging from her back and a tail that ends in a snake's head. She terrorized the kingdom of Lycia, but was slain by Bellerophon, rider of the winged horse Pegasus.
- The Chimera featured in the show bears some resemblance to King Caesar, also combining reptilian and leonine features.