He restrains himself, barely.

He rolled her off him and he was atop her, pulling out and kneeling over her face, jerking his cock hard and fast as the supervillainess lay there, stunned by the orgasm that had just burned through her body and mind.

It was when her eyes opened that he shot his load. Her mouth opened to make a comment and a good half his load went in her mouth, the other half painting her face. He was between Ultimamom and his body and Ultimagirl's face, they couldn't see that he'd cum on her face an in her mouth, the later being the most important.

She was very suggestible. He leaned forward, putting his face right next to her cum-covered face. "Please, stay still, you're comfortable, right?"

"Yes." She said, tonelessly.

It took three questions to get all the codes he needed to play with the machine and accessing her computer systems. Then, she was still suggestible, and the suggestions would stick. It couldn't be anything that fought directly with what she actually believed, or conflicted with her base personality, it had to be more subtle than that.