He starts losing his mind!

The Father and Son duo quickly got into a rhythm as they pounded Ultraboy's gaping hole as their cocks gilded up and down against each other as they stretched the young heroes asshole beyond recognition.

"OH FUCK! W-WHY D-DOES IT FEEL SO GOOD!"

Taboo captured the wailing heroes lips with his own, making out with him as Pleasure was planting soft kisses on his neck whilst also jerking his cock off. While they were fucking Ultraboy, Taboo was using a part of his extraordinary mental power to study Ultraboy's brain and he was pleased to see that his willpower was diminishing everytime he came and at the rate they were going, it would only take Ultraboy cumming three more times before they broke him.

Sending that information to Pleasure, Taboo kept penetrating Ultraboy's brain, scouring it for more areas of weakness, he found one when looking into Ultraboy's hidden fantasies, that particular fantasy was of him being captured and bred by Nishki The Futa Converter! Taboo mentally stored that particular nugget and then set about moulding the young heroes brain, making him much more agreeable.

Ultraboy grunted into Taboo's mouth as Pleasure made him cum again, swiftly followed by a second orgasm.

"Are you ready for me to break his brain Father?" Pleasure mentally asked his Father as Ultraboy lay between them, a sweaty limp mess.