Near the conclusion of the Garlemald section of Endwalker, things got weird. Our Warrior of Light temporarily switched bodies with a common Garlemald soldier, and was promptly kidnapped by Fandaniel for a dinner party with archvillain Zenos. That's a whacky plot twist (and Yoshida teases that he "adjusted" the original scene from Ishikawa), but for Ishikawa it's much more simple: Zenos wanted to do it because it was interesting to him – nothing more, nothing less.
In fact, Ishikawa thinks we're a bit quick to judge Zenos by his domineering appearance, glowering sneer, and bloody scythe the size of a human. It's that Zenos is willing to go through "whatever trial and error it takes" in order to achieve his goals that separates him from the player character, Ishikawa believes. Yes, Zenos does think about only himself, and that can have dire consequences for those around him, but it's his drive to do whatever he believes is necessary to achieve his goals that truly separates him from anything we are able to do as players.
Zenos has been a threat to players for years. The villain's story was wrapped up in Endwalker, just like the Hydaelyn and Zodiark arc, and both Yoshida and Ishikawa are very happy with the end result. "His story needed no further embellishment, nor any further happiness or misery," says Ishikawa, adding that because Zenos wasn't concerned with how others saw him, she had no hesitation in writing out the closure of his story. Yoshida, on the other hand, says Zenos was the only one who saw the Warrior of Light as a simple adventurer again, joking that when the villain asks "did you find… fulfillment?", that doubles as a question from the development team to the player.