Back at base Siren offers the Fantastic Four to you

To say you were surprised by Siren’s first **** being shown on the news was an understatement. You were sure that she’d lose against the experienced fantastic four having been just newly bred her, but she had performed beyond all expectations.

There was a knock on the door, rushing towards it you opened it to reveal Siren with a bag of gold in one hand and Susan Storm in another.

“I hoping you have somewhere to contain these Super Prudes Master John” she said hurling her into your room.

“I do in fact, just attach them to one of those” you mentioned pointing to a series of chairs which were designed like virtual reality machines. Siren did so and Susan Storm was trapped in a virtual reality and was yours to shape.

“Great now just let me get the others quickly before the heroes get their act together" she said enthusiastically, shooting out of the door and in the blink of an eye returning with first the Mister Fantastic and the Human Torch, then the Thing. Locking each of them in different chairs ensuring their capture, the Thing's size posed some difficulties but you had prepared for that and were eventually able to squeeze him in.

"So now that we've got these heroes here what are we going to do with them?" asked Siren,examining the four like a hawk.

"Well the way I see it we've got several options, the first is to simply kill them" you explain causing Siren to gasp.

"Surely not Little Miss Susan here? The curves on her are too good to resist" she squealed, tracing a finger down Susan's bust.

"Well perhaps not her, but for the others. Another option is to make them our spies within the superhero community, with heroes of this calibre we could have complete access to their operations and everything" you explain, "we'd have to keep them all alive for Shield not to get suspicious"

"I like that idea, but will we still be able to fuck this slut?" she asked pointing to the Invisible Woman.

"You really have a crush on her don't you?" you tease to which she smirked.

"Hardly, I just think she's a hot fuck, your the only one I could truly love" she said, though she was doing this while getting a good feel of the blonde's tits.

"Well you might like the last option where we turn her, and perhaps the rest against the heroes. We could do anything we wanted to her after that" you explain "so which option do you like the most?"