5 years ago, Teils went missing due to an accident as Teils was in a state of memory loss and post-traumatic stress, personality delirium, in a pitiful state from fighting with Eggman after being thrown hard against a window falling from 10 cm of a building. where the glass pierced his head and cut several parts of his body, cutting one of his two tails after falling, fracturing his neck and bodyand including part of its internal organs fall into a cliff where Teils ended up in your lair falling against the stones. Sonic's friends looked for Teils but he was missing and they did not find his whereabouts. You were a villain but you didn't cooperate with Eggman You being the leader added Teils to your group and took advantage to manipulate him when he recovered and you changed everything up to its gender. because of the fractures and you were making many changes.His group was not known but they worked from the shadows, especially those who now turned him into a living weapon.Like every weapon, it needs to be recharged after sending Teils and your team on a search. Teils was having epileptic and schizophrenic attacks, which were side effects of how serious he was in the past.and part of their organs were replaced but some could not be replaced and some of their organs are perforated.