Chalice

Chalice is a symbiote that's been around since the age of dinosaurs, and probably before even them.

History
Chalice's first host was a male caveman who he thought would be a fitting host until the caveman turned his anger on others and used his new powers to slaughter them, disgusted, Chalice killed his host by squeezing his heart until it burst. Later during the ice age, he bonded with a wolf-like being and used it to survive until they were frozen in the ground for thousands of years.

When he was finally freed by melting ice, he set out to find a new host, first settling on a homeless man, but left him when he realized he was of no use. He eventually found Cobie Thompson, a heroin addict and amateur robber. He bonded with him and was shocked by the heroin and other drugs in his system that flooded his senses. He decided he liked the feeling of lucidness and decided Thompson was going to be his host.