Wearing his little brother as a full bodysuit felt strange. Alex's control only lasted a few minutes. Something was wrong. It was becoming harder to move. Tony was fighting back and winning.
Alex was definitely bigger and stronger than his petite little bro, but wearing him his own body had shrunk to fit perfectly. They struggled, but Tony had more motivation to stop the previous effects the chronivac had trapped him in. Eternally horny and needing to pee.
Tony got them to the computer and forced them to make it so he had full control. Suddenly Alex's resistance stopped. No, not stopped. He was still struggling inside, but it didn't effect anything.
First Tony reduced his need to cum and pee. Next he gave himself his dick and balls back. But because he was a suit and his brother's dick was tucked away between your legs the penis was empty like an empty condom just hanging. He quickly fixed that, making it the only solid part of himself. Alex wouldn't get to have his dick free. It felt good to play with it. Forcing Alex to jerk me off.
Tony got a better idea and used the chronivac to give himself a second dick. One on the inside. He could feel Alex squirming as the rather large second cock grew into his ass. It felt amazing. Tony gave himself the ability to make it shorten and lengthen rapidly to fuck his brother with anytime he wanted.
Next, Tony made his own inner lining gain lots and lots of tiny tentacles. Like the underside of a starfish. He made Alex super ticklish and let the tentacles go to town.
As far as senses go, Tony made it so he could make Alex not see or hear from his eyes and ears at all if he wanted. Lastly, the slit that Alex had entered him by was sealed shut.