Sporty, young & female

And right now, he was testing the shit out of his new invention together with his son Tim!

That faithful day, Tim was standing in front of a beautiful brunette young woman posing inside his room.

"And this is why I look like this! Any questions, son?" she asked in a gruff male voice. It was that of Walter, Tim's father.
"Dad, if I had not seen you change a few minutes ago, I would not believe it! I mean, hard-light holograms? And you are virtually indestructible?".
"Yes, only a high-energy laser might rip through the **** field!" Walter replied truthfully.
"But why a woman?" Tim went on.