Login_to_view said:
For what it's worth, the manga also feature original secondary characters. I am not sure if they have any art on danbooru, but some appear for multiple chapters.
I mean, I did point out the original manga characters on GFL's end; its manga, Doll's Song, has its own original Commander, and several secondary characters inhabiting the positions of other Commanders who appear in multiple chapters, and the proper anime would use the manga as its base for its adaptation, with some changes here and there to try and reconcile with game details (to varying success). Beyond Gentiane, not counting official art, there's only one piece of fanart that features these secondary characters, and they're all lumped together with Girls' Frontline. M4 SOPMOD II Jr is the only chartag to emerge from the chibi anime that was made, meanwhile, as fanart of that anime is also just lumped into GFL.
Of course, everything I just said might just be bullshit that's happens to be the case because no one bothered to make copytags for any of these; Azur Lane: Slow Ahead exists, after all.