I was a Guardsman at the Vault. You know, the maximum security prison for supervillains? Except I hardly ever saw the inmates. They had me assigned to the labs.
So yeah, I let them go. Any decent person would've. Too bad my bosses weren't decent people. When they found out what I'd done, they fired me on the spot.
With no money, my brother and I had to move back to the old 'hood. We weren't there a week before we got caught in a drive-by. My brother was killed, and I was paralyzed.
I was ready to end it there, but before I could, the symbiotes found me. They gave me back my legs, but more than that, they gave me a purpose: bringing justice to the helpless.
I call 'em my roommates. I got few complaints, but it gets kind of crowded with four other voices in your head. Especially when they've all gone crazy with Goblin Serum.