The_Homelander
I don't think you should do to many cross overs, it would be fun if you drop him into DC and leave it at that. DC, Marvel and any other comic book universe is soo large it's better to just stick to one. Overall I think it would be fun if he went to DC and created a company like Vaught. The interactions between him and the Justice League, how the Heroes would feel about a Hero who kills so openly yet is loved by the public. I think you can get a Lot of good arcs out of this idea.
AHH MR. HOMELANDER IS PLAYING HARD TO GET BY( MS. MADELYN SITWELL ( ELIZABETH SHUE) BY VOIGHT INTERNATIONAL!/ (HOMELANDER )DEBUT (BLACK NOIR) JOINS THE TEAM We catch back up with our resident homelander some years later, with his official Superhero debut by Voight international company. Including taking down the some random criminals on the way. Whilst talking about the Superhero origin( football hero) story made by Voight international PR company . Doing the Blue Scout thing for the public and reporters questions. BesidesBad girl Cougar Madelyn Sitwell getting hot flashes with new guy homelander. hahaha! Along with introducing new partner Black Noir , as Homelander( John) were blindsided by Black noir introduction by voight international company, with new Handler Madelyn using her feminine wiles on Homelander ,which our transfered Homelander flipping the script with her manipulation game on the confident Homelander John. As our resident Homelander isn't that easy Madelyn ( she's got her work cut for her) as the gathering of titular Seven team commences. As my best speculation guess is going to be a regular game between the two of them ( although he won't quite deny her yet , as still a man of course, Author San) in the Boys verse,including were some what bff Queen Maeve( Maggie) whereabouts are in the meantime. We'll see how it goes next time for our resident Homelander and rest of the seven at Voight international in The Boys verse arc 1 . Continue on See you soon Cheers!
For crossovers, standard DC and Marvel is a given, other fandoms... well depends, what is his objective in traveling the multiverse beyond adventure? enhance his powers? He may not be boy-scout Superman but he's clearly not dark as canon, so he would be a largely neutral character out for his own betterment but not at the cost of innocent people, basically an anti-hero, future plans include taking over Vought or something? I await future chapters.