Warning! Spoilers for The Boys comic book series
In The Boys comic book series, Jack From Jupiter actually warned Homelander about the circumstances that led to his eventual death at the hands of Black Noir. In The Boys #58 from Dynamite Comics, Jack is confronted by The Seven after pictures leak of some of his most depraved acts. In an emotional plea to Homelander, Jack warns him that a similar situation could lead to his demise, which happens later in the series.
In The Boys, Homelander's reign on the world slowly falls apart after pictures leak to the press about his most sinister acts. The images show dark actions, including full-blown cannibalism, driving Homelander mad, and leading the Supe to attack the White House and kill the President of the United States. However, the photos that would lead Homelander to his death weren't actually of him - as his secret clone Black Noir was the person snapshotted instead. The situation is nearly identical to an earlier warning from Jack From Jupiter, who panicked after his own photos leaked to the press.
In The Boys #58 by Garth Ennis, Darick Robertson, Simon Bowland, Russ Braun, and Tony Avina, Jack From Jupiter lashes out in anger after learning several compromising photos of him have been leaked to the press by The Boys. The depraved pictures make the press question whether Jack is worthy of still being on the team creating a PR nightmare. After the alien Supe loses control and nearly fights The Deep, Jack has a tearful plea to Homelander about being set up, warning him that it could even happen to him.
Jack From Jupiter's warning actually comes true for Homelander. As later in The Boys comic book series, photos of the Supe committing especially heinous acts would leak to the press, leading Homelander to lose control completely. However, in his case, the images weren't actually of Homelander; as instead, they were really of his secret clone Black Noir, setting him up to turn the public against him. The release of the photos set in motion the events of Homelander's death as he would die in his final fight against Black Noir.
Jack from Jupiter's warning that leaked photos could take down someone as powerful as Homelander ended up coming to fruition for the Supe, as he was blamed for depraved acts that he never committed - eventually leading to his death after fighting the man responsible for leaking the images, Black Noir. In The Boys comic series, Jack From Jupiter foreshadowed Homelander's demise and death and how he would lose, with his warning proving that anyone, even someone as powerful as the patriotic Supe, could be taken down after being framed like he was.