Mark: Hey mom, you called.. what happened, the container is empty.. where's the symbiote?

Sarah: (in a husky voice) It's here baby, with me. (As soon as she said, the suit rapidly changed to it's original color and shape, and retransformed Sarah into the goddess she had become)

Mark: Mom, you.. you look different, and amazing.. All the flab is gone, and your voice is so enticing.

Sarah: Thanks baby, it's all thanks to you and the other one.. We have bonded and it's no longer a symbiote and I'm no longer Sarah.. WE ARE PHENOM (Said Sarah in a dual husky voice). We love you Mark, and we want to give you your true reward.

The symbiote had corrupted Sarah's motherly love into an incestous love for Mark to fuel it's lust and hunger.

Mark: That's amazing, I've always wanted you to liberate and see you look so younger and sexier. All that fat is gone now.

Sarah moves towards Mark in her talons and tendrils flow from her crotch to rip off his clothes and he's nude in front of her.

"You deserve the best there is dear, and We're the best that's there in this world, So" said Phenom and caught him by the tendrils and liplocked him with her slimy yet sexy serpentine tongue. Mark was in ecstasy with the pheromones secreted by Phenom and kissed her back.

Phenom let tendrils flow to his erect cock and cover it and it started swelling up his dick to a size of 10 inches and it had become ribbed with considerable grooves as one finds on some of the kinky strapons. Her mind was connected with that of Mark and both could feel the tingling sensations of lust for each other. Mark started pumping Sarah with the humongous monstrosity of a cock and the symbiote fueled it by secreting green oozy slime that filled the room with an alienating musky smell. Sarah was enjoying every bit of her corruption and the steamy sex, and she wanted Mark to be a part of it, so she asked symbiote to spawn a suit for Mark, for which she wanted his cum. She squeezed her walls which aroused him more and finally at the brink of it he loaded shoots and shoots of cum into the tendril which gobbled it up and assimilated it inside her womb and spew a Green and Black suit. 

Mark, now exhausted from the sexual rendezvous, sat on the bed as he saw the goo moving towards it. Sarah smirked in elation for what she had created, "Our baby, bond our child.. give Mark your power, become the One"

"Mom!!" sighed Mark

As the last words out of his mouth, the tendrils shot up to Mark, encasing his feet, Phenom's child being rather aggressive than the original symbiote, quickly covered his body till his neck and began transforming his body as it shot up his anus and lining each organ and assimilating into his cells to form the ONE they were destined to be. It then crept up his face and encompassed it to form a toxic green black mask with yellow teardrop eyes with razor fangs and dual serpentine tongue, and formed a glowing spider on the chest across his ribs. 

"Aaaaarrrrrrrrrrghhhh" Mark's loud roar filled the room,"We love you Mom, we are VIPER"

"We are not Mom, Queen Phenom and you're my love and together we rule them all" grinned Sarah.