Onyx was a male bull orca who formerly lived with a pod of orcas off the coast of Nassau, in the Bahamas. The pod had ditched him though as he was no use, often sitting and lounging, doing nothing. A mixed-species pod of dolphins led by 5 O' Clock, an Atlantic spotted dolphin had allowed Onyx to integrate in.

Unfortunately, a few dolphins had been caught in a shark feeding frenzy, and Onyx had been spooked along with the others. He leaped out of the water, but unexpectedly crashed face-first onto a small fishing boat, killed by a brain hemorrhage. The fisherman had quite a surprise.