Cesar Torres and his mother were likely killed off-screen by an alternate after it managed to break into their home through their backdoor. Later that same day, the alternate would go on to disguise itself as Cesar in his signature prom suit and call Cesar's friend Mark Heathcliff. During the recorded phone call the alternate describes as Cesar that he found his mom passed out after screaming and is on his way to the hospital, then asking Mark to turn on the security cameras at his house while he's gone. During the phone call, "Cesar's" face glitches out to have a large smile, teasing Cesar's replacement.

After Mark finishes turning on the cameras and returns home, we are shown security camera footage from earlier that same day where Cesar's mother shouts "Who are you?! Get away from me!" then screams. Cesar's face is seen contorting beyond recognition, confirming to the audience that he was replaced and the alternate attacked Cesar's mother.
Mark attempted to call Cesar, telling him that an alternate followed him home, not knowing "Cesar" was the alternate that followed him home ending in disaster.

Cesar Torres has made a small cameo during the scene where 6 flashes imagery from Season One after Adam asked who they are.

"Cesar" is discovered to have been the perpetrator involved in Mark's suicide as his fingerprints were discovered on the doorknob. It is also implied that there was a struggle between the two as multiple rounds were found on Mark's bed. Following Mark's investigation, the MCPD put up "Alternate Report" posters for Cesar Torres.