Mewtwo ignored Jenny's hissing and nodded to Phoenix. "Yes. The incident in Fuchsia." He paused to collect his thoughts. "We had stopped in Fuchsia after the incident in Stone Town, after I had once again escaped from Team Rocket. During that time, I was suffering a mild infection due to an implanted tracking device that was removed soon after I had escaped. Also, during that time, I had noticed that Dr. Wily II, one of my surviving creators, had taken on a very unnerving persona. As I was studying archived files of not only my creation, but his other projects, I noticed what had sealed that persona away and I knew what I had to do in order to lock it away once more."
He paused again to give the overworked stenographers some time to catch up. "When presented with the opportunity, with Wily's former persona at the forefront, I confronted him. He begged me to help him, so I did. I focused all of my energy into a Disabling attack. The resulting explosion leveled the surrounding city block."