A quiet, polite, lonely immortal esper about which little is known, he is called "Locke the Superman", but often denies being so. It is not known where or when he was born, and if asked, Locke will say he does not remember. It is entirely possible this is true. However, when asked by Cornelia Prim in "Millennium of the Witch" which star he was from, Locke replied "Toa." He has appeared at various times throughout the history of the galaxy, either as a direct influence, an indirect influence, or a simple observer. Using his esper abilities, Locke can learn and do most things more quickly than a normal human. His power also allows him to remain eternally young, or even turn himself into a child again to be adopted by kind-hearted families. It is speculated he remains youthful as an excuse not to take responsibility for whatever cause he is approached for, since no one expects youths to have such responsibilities.
In the space history year of 0375, the killing Plan of Esper and the Imperial Plan met with failure. Run, who had executed these plans because of his partiality for his own self-made computer named Elena, lived together with Locke and Near under their protection. At the same time, Cassandra and Barcov of the Hackers netted the widely dispersed computers in each corner of space, and they succeeded in reviving some abandoned programs. This was the federal administrative computer, Elena. She tried to start the previous Imperial Plan again. When Locke found out about it, he set off to stop it. At the same time, the federal administration which detected something abnormal, also started to move. Involving Run and Near who chased Locke, the confusion was expanding to the entire Galaxy...