Tachyon is a jaded space-time explorer. After witnessing the end of time and existence in a terrible accident, Tachyon no longer performs high-risk, long-distance space-time jumps, but he is still a nimble space-time explorer.
He is still able to perform a variety of flexible, short-distance space-time jumps, which he uses effectively in battle. He has also developed a hyperspace power that allows his mind to detect the infinite possibilities of the near future, allowing him to grasp all coming opportunities. After receiving the Observer's call, he decided to trace every possibility from that moment and let himself find the meaning of his existence in the limits of his own time and space.
Tachyon was once a member of the legendary time and space expedition team "Occam's Razor." They loved adventure and were employed by various collectors and academic organizations to help obtain cosmic artifacts, including the legendary Quantaar. Tachyon was the most enthusiastic and reckless time-jumping explorer of the Occam's Razors, until he underwent an unstable long-distance time jump while energy-overloaded.
When he emerged at the other side, he witnessed the end of time and the horrifying, endless nothingness there. This cruel truth produced great changes in Tachyon's mind and body, and Tachyon was overwhelmed by waves of fear and sadness. He left his companions and restricted himself from making space-time jumps of more than 5 seconds.
The truth of time also affected Tachyon on a fundamental level. He developed a super-temporal spiritual power that allowed him to detect infinite possibilities in the next few seconds of the future. Now, he is no longer curious about the past and no longer has expectations for the future. In this limited time and space, he just wants to concentrate on finding the true meaning of his existence in every moment of the present.