So... the other reason that motivated me to making this thread is I saw the Academy Award winning sci-fi action film, 1998's
Soldier starring Kurt Russell. What it lacked in overall high quality, it made up for in lack of dialogue. It's actually a pretty decent film which tries to condense a lot of stuff into a 90 minute movie with almost just as many spoken words of dialogue from the main character, the story being of someone being raised from birth to become as perfect a soldier as can be made. There's a plot that goes on from there but that's besides the point. Want to learn about it, here's an analysis of the film from
GoodBadFlicks which is a fair way of describing that film.
I think it's apparent where I'm taking this though.
Space Marines are the center of the
Warhammer universe and taking in what Simonbob said about a story being all action, by following this character journey, it could actually help alleviate that.
In
Soldier the first years of life, right up through adulthood and dozens of campaigns is played through perfectly in a montage of scenes. These scenes introduce the character. A montage of scenes in this case however would introduce not just the character, but the Universe of 40K. One of the first scenes of the montage would likely be of some Traitor holding a Woman hostage and the Guardsmen lasgunning them down with only the slightest of hesitation. Instead of just fighting randos on random worlds, it'll show a montage of PDF/Guardsmen fighting Orks and Tyranids and Rebels. You can also introduce things like seeing Drop Pods coming down, daemons, a brief display of Psyker power, interrupting a Chaos ritual, and of course seeing Space Marines etc. But there'd be other scenes where the Guardsmen are engaged in camaraderie and prayer and the like.
But lore followers will know that Adults typically can't become Space Marines. Instead the Space Marines find in the Guardsmen camp a
Juvenile who was orphaned in one of the conflicts and taken in by the regiment. Sharp eyed viewers might notice on a
replay that the Mom that was gunned down might've been holding a bundle or maybe pulled away from a manger or something. And then later you see a growing lad in the background, like as a child being carried in the background (assuming he was a refugee being rescued perhaps), and then an older kid running along side them cheering during a march through a town, then maybe when older you see an older lad assisting with religious rituals or cooking or even cleaning weapons or something before a final blink and you'll miss it scene of a literal child soldier blazing away with a weapon in the middle of the same final battle of the introduction that the Space Marines show up in. Having him holding a fallen flag in the other hand for bonus points.
Being raised amongst a bunch of the finest soldiers in the galaxy already, they'll select him to become an Aspirant and probably go through some other interesting trials with other aspirants. The Blood Angels and Dark Angels have some fairly grimdark rituals for Aspirant selection which could actually "introduce" the actual character whose already pretty hard from being raised on War. Have him squaring off with Aspirants that are from feral worlds and Hive Gangers etc. With that kind of basis established you can then go into the Neophyte stage and the gruesome surgery and hypnotherapy that takes place as a wonderful climax for the first episode of some $200 million dollar streaming TV series.
Needless to say... the series would be about a Space Marine.
So... perhaps much like how
The Mandalorian (re)introduced a lot of people into the inevitable Meh that became DisneyPlus Wars, we can have a first season of this show introduce a Space Marine as a completely original creation in an established setting. After the first episode, it can deal with his time as a Neophyte and eventually a Scout.
The real challenge of the story would be the passage of time, since your typical Scout Marine spends decades as a Neophyte, but if he wasn't going to be exceptional, we wouldn't be following him in a TV Series. So he'd likely become a Battle Brother or standard Space Marine within a human lifetime, because one of the longer storylines would be his upbringing in the Imperial Guard... and perhaps more spookily... the circumstances of how he was found. You can go zany with the circumstances of why he and his family were in the midst of some Chaos Uprising or something and sprinkle in other Chaos nonsense as well and some inter-Imperium Deuterantagonist along with also trying to find some primary external antagonists.
Maybe the initial external antagonist can be an enemy of his particular Company or Chapter (Something Chaos Space Marine would probably be best for the setting), but later on a more focused antagonist can arise for his specific Company that he is a member of that can carry over. Ideally it'd be the opposite of a Space Marine... or a similar foil. Honestly some sort of rivalry with an Eldar would be nice as a long term Deuterantagonist. Eldar aren't necessarily evil but their manipulations, if well written, combined with general xenophobia, could make for a great long term Grey character that flutters into their lives. I'd actually avoid Tau... they're too specific and localized. A novel idea would be an Ork of some sort being a parasocial antagonist. Initially one would feel that would be secondary... but if it's written in an interesting manner without Flanderizing/Overly Meme'ing the Orks... it could be a pretty neat concept.
The main drawback of this I feel would be the idea of having "two beginnings" but I think it could be handled well enough. I loathe voiceover narrations for openings, I'd want to keep text crawls to a minimum and I want something similar to how Lord of the Ring films established the world but without the narration, but focused on the characters.