Jesse Turner, the Antichrist, disappeared after using his powers to vanish at the end of the episode “I Believe the Children Are Our Future” in Season 5. He has not been seen since in the series.
In the show “Supernatural,” Jesse Turner is introduced in Season 5, Episode 6, titled “I Believe the Children Are Our Future.” He is depicted as a young boy who is the Antichrist, a being with immense powers born from a human woman and a demon. Jesse’s powers are instinctual and are triggered by his beliefs and emotions. When Sam and Dean Winchester discover his existence, they initially believe they might have to kill him to prevent the apocalypse. However, upon meeting Jesse and realizing he is an innocent child who is unaware of his true nature, they decide to inform him about his origins and the potential danger he poses to the world.
Jesse is shocked by the revelation but is also confronted by the demon who fathered him, who tries to convince him to join forces with Lucifer. Faced with a choice between his human life and his demonic destiny, Jesse decides to use his powers to go into hiding, wishing for himself to be somewhere no one could find him. His disappearance is so complete that even angels and demons are unable to track him down.
The character of Jesse Turner was never brought back into the main storyline of “Supernatural,” leaving his fate unresolved within the series. This has led to much speculation among fans about what might have become of him. Despite his significant potential as the Antichrist, the show’s narrative moved on to other story arcs, and Jesse’s character remained one of the loose ends in the “Supernatural” universe.