Bullseye stared in stunned silence at The Doc for a moment.  Then he started to laugh.  And not just his usual cackle.  A full-on, hysterical roar.
"Doc, I could be dead by then!  Don't you know, I've been carrying death for years!"
Bullseye jabbed a finger at his forehead.
"RIGHT....HERE!  I have a brain tumour, I could drop dead at any moment.  Do you really think I'm afraid to die?  I'm worried about not getting paid, but I ain't afraid of death.  And I'm going to prove it to you."
Bullseye  sauntered past Doctor Octopus, over to the reactor, leaning back against its wall.  Then he ripped open his costume at the neck, exposing a network of wires criss-crossing along his chest.
"This is what i call my fail-safe.  You see, after I last escaped from prison, I called in a favour from a scientist that used to work for the government.  He gave me a few upgrades, but this one is my favourite.  It's a compact chemical bomb, held in place by a slim harness I can fit under my costume.  I figured that, if I was ever fatally wounded, I could take my killer to hell with me."
Bullseye chuckled to himself, taking out a trigger from his glove..
"I know what you're thinking.  What happens if it goes off when I'm fighting?  Well, that's the beauty of making it a chemical bomb.  Right now, its harmless.  I need to arm it first."
Bullseye pressed a button on the trigger.
"Done.  Now, I can press the green button to neutralise the chemical composition, and disarm the bomb, or I can press the red button and blow myself to kingdom come.  A nice, quick, painless death, I'll go out in a blaze of glory.  But at this distance, I might not get you.  But I will take out the reactor wall behind me, and you get to die a slow agonising death, wallowing in radiation, along with everyone else in New York."
Bullseye gave a taunting smile to his employer.
"Your move, Doc."