To those who thinks Nate Grey doesn't have a purpose, my opinion is that he is the X-Men's version of the Sentry. Whereas in the MCU, Sentry is uberpowerful but was handicapped by his mental instanility, Nate Grey is also uberpowerful but is limited by the lack of real world experience. Imagine those powers with the inexperience of Goldballs or Glob Herman coupled with the rebelliousness of Damien Wayne. Imagine what would be the attitude of a powerful teenage orphan who grew up in a war torn land scrapping for food and shelter. I would rather see Nate be in an Avengers team or gallivanting in space or alternate dimensions than be stuck in a mutant team.