Valley89

That's what the lollipops were for. He knew that he could be dangerous, so he made those to keep all that and his other personality in check. To surpress it. When his mother provoked him, it failed and he spiraled. That's why the show ends with a blue lollipop. He had to create a stronger formula to keep others safe from himself.

He didn't just "suddenly" get them, he always had those powers and abilities. In one of the first few episodes Hye Won's father talks about how the kids turned into mutants due to the experiments, how strong they are and what they are capable of. He was just hiding it. + When the truck hit his car he literally pushed it out of the way with bare hands lol.