"I...don't know what four den is. Is it a form of martial arts? I just like to be quick. As much as I can be. Turning to steel is one thing, turning to steel and saving your friends and teammates because you're quick enough to deflect a laser is something else. Entirely. And that's why I like it. Plus, I've been doing it for years. Probably wouldn't believe it, but I used to be a wimp." Probably not all that hard to imagine, given Billy's quietness, but still, he didn't look like anyone who had been bullied - now.
"But it's good to relieve stress too." Which Billy had plenty of since Jean-Paul seemed to refuse to leave the room. Which made Billy not want to go back. So the gym was a good distraction. As were his chips! He picked up a few and chomped them in half.