Primeval Rebirth

After millions of years of existing without evolving as most other earth creature did, a protoplasmic entity, the last of its kind, becomes a symbiotic part of a primate. Then, acquiring an ability to move from host to host for thousands of years until modern times when it attains Robin Bender as its final host.
It quickly decides to merge with him and become an integral part of Robin life, and together they experience great adventures, including conquering Las Vegas and becoming great movers and shakers within its business and gambling culture.