Warning! Spoilers ahead for Uncanny X-Men #6!Tensions are high between Rogue’s X-Men and their new mutant recruits, as it’s been heavily hinted that one of the young trainees will betray them, possibly leading to the destruction of the X-Men and all mutantkind. I think this is an interesting predicament for the X-Men, as it leads to many questions of who this “Endling” could be, and how their betrayal will lead to the superheroes’ ruin.

https://screenrant.com/x-men-new-apocalyps-villain-marvel-comics/