Venom: 8 Most Powerful Symbiotes
2. Toxin
Toxin was born from Carnage, the 1000th spawn from its lineage, and was actively feared by both Venom and even Carnage itself as having the potential to become the most powerful and dangerous of all symbiotes besides MAYBE Knull.
And when we get to Knull (because of course we're getting to him), you will understand why that being under the "maybe" category is such a big deal.
Now granted, Toxin has yet to actually reach this potential, due to Toxin's overall inexperience with his powers as well as his poor choice in hosts. But that has been little comfort to other symbiotes like Venom, who still see the danger of just letting Toxin run around unsupervised, as the minute Toxin meets his potential, we are all in a lot of trouble.
As such, Venom has been trying to train the young symbiote to make him another symbiote superhero like him.