Of course they had to make them. Some mutants are easy to spot because of their appearance. But others? Like John? They're more difficult because of how easily they can blend in and seem normal. That's why they needed machines able to detect the x-gene in others.

Turning a little to better look at Jesus then, his eyes feel... heavy. With a lot of things that he's been keeping to himself. Things that he hasn't really let go of just yet.

"I died alone and I woke up alone," he admits. "I shouldn't be here."