These early episodes establish the core mechanic of the "doppelganger" ability. The protagonist often starts by experimenting on those close to him, leading to confusion and various "body double" situations.
Alex confronts his doppelganger. In a shocking twist, the doppelganger reveals it has memories of being Alex—the good, the bad, the boring. It argues it is merely a "saved state" of Alex from a happier timeline. The line between villain and victim blurs completely. 3dgspot Doppelganger Episode 1 12