Use her obsession to convince her to surrender…

Ultraboy winced at the images in her mind, but she didn’t know he was Ultraboy and never would, unless someone told her, such were the rules of the universe.

“You want Ultraboy to be your little bitch, you want to beat and break him, mold him into your obedient little ****. I intend to rule the underworld. This traditionally necessitates dealing with the superheroes as well as the supervillains. If I can do this,” his hands left their tits, one coming to rest on Ultimamom’s ass, to brace himself, the other freed his softening cock, then returned to Ultimagirl’s chest and to blasting it full of pleasure. His cock bounced off Ultimamom’s golden head, only to be caught by full lips as it fell towards Ultimagirl’s face, “to Ultimamom, then I can certainly remove Ultramom from the equation. Should you join my service, then, if I, or anyone loyal to me captures Ultraboy you will have full control over his fate.” He thrust deep into her mother’s mouth. “In fact, I’ll put you in charge of attempting to capture Ultraboy.” He pulled out and let his wet cock slap down on Ultimagirl’s forehead. “Do we have a deal?”

“Yes…” Ultimagirl whispered.

Ultraboy nodded then rose and walked around the entwined, spread-eagled supervillainesses. It wasn’t feasible to just roll them, so he picked them up, grateful for his superstrength and dropped them back down on the bunk, Ultimagirl still on the bottom, as the increased height had changed the possibilities. Her head dangling from the edge of the bunk, pinned by her mother, eyes locked on his dangling cock, she was helpless, weak, just how she wanted him.

He approached slowly. “I demand complete obedience from my subordinates, and in return, I reward them well, just ask your mother. Aren’t you glad you serve me now?”

“Yes,” Ultimamom said, sapphire eyes on his, the simple honesty of that statement coming through despite its brevity.

“Don’t you want your daughter to join you in my service?”

Her eyes fell to her daughter’s whose head had come up to stare in shock at her so-strong, so-proud, so-broken mother. Ultimamom spoke a single word again. “Yes.”

When Ultimagirl’s head fell again, in shock, she was eye to, well, eye with Ultraboy’s swinging cock, it brushed her nose as swayed his hips. “Your first order is to suck my cock.”

“If you have powers like Taboo, that will let you influence me,” Ultimagirl whispered.

“Indeed it will, but seeing as I already control your mother and there’s no one else you care about, what does it matter? The only order you wouldn’t want to follow is to be nice to the Ultrapains in my ass, and why would I give that order?”

“Fair point,” Ultimagirl admitted.

“Catch it,” Ultraboy ordered, bending over and groping Ultimamom’s tight ass and pulling on the duralexx crotches of Ultimagirl, forcing it to split her cunt lips and pull on her clit. His cock dragged over her face, twisted in abstract patterns in the air by his irregular hip movements. It took a great many tries, before she finally managed to catch his cock with lips she’d inherited from her mother, lips designed to suck cock.