There’s a description of Tyberos the Red Wake I’ve never quite shaken. When he takes his helmet off, half the bones of his face show through the skin. The bone comes through on its own, no wound involved. His flesh is just going, and it’s already well underway in the Chapter Master of the Carcharodons. He’s supposed to be one of the good guys.
The Carcharodons, the Space Sharks if you’ve only ever seen the grey models on a shelf and wondered why a Space Marine Chapter would paint itself the colour of a dead fish, are loyal. Genuinely, on-the-record loyal. They answer Imperial call-ups, they kill xenos and traitors, they’ve bled alongside other Chapters when it counted. What nobody in the Imperium can actually tell you is where they came from, who founded them, or what exactly is wrong with them.
Black Library has been nudging them back into the light lately. Robbie MacNiven’s two Carcharodons novels, Red Tithe and Outer Dark, are getting fresh special editions, and there’s a new one on the way called Void Exile: Bail Sharr and the Third Company dragged in to save a forge world when a Chaos-infested space hulk drifts into its orbit. Which is about as Carcharodons a job as it gets. They’re who you call when the thing in the dark is too big, too far out, and too quiet for anyone else to reach in time.
Where the Carcharodons came from (nobody knows)
The actual state of the record is thin. The Carcharodons show up in force during the Badab War, that great messy secession out in the Maelstrom Zone where a handful of Chapters went rogue under Lugft Huron and the Imperium sent a handful of others to put them down. The Space Sharks arrived on the loyalist side, out of the deep void, and nobody was entirely sure who’d sent for them. Their commanders spoke in whispers you had to lean in to hear. They fought like something out of the worst kind of dream and then went back out into the black when the work was done.
Their gene-seed is a mess. Prone to mutation, prone to degeneration, and it gives them that pale, almost dead-looking pallor. Older Carcharodons apparently develop denticles in their skin, the same tooth-like scales a real shark has, which is the grimmest bit of flavour text GW has ever quietly committed to and also completely in character for marines whose gene-line has been drifting for ten thousand years out where the Astronomican doesn’t reach.
The most popular theory, and it’s only a theory, is that they’re Raven Guard stock. Specifically the old Terran core of that Legion, the cold veterans who were running things before Corax turned up and softened the whole thing into something more noble. The idea goes that those Terran veterans got quietly shipped off into the outer dark, told to go and kill humanity’s enemies at the source, and just… never stopped. The Carcharodons revere a figure they call the Forgotten One, and the Void Father, and depending on which breadcrumb you follow that’s either Corax, or the Emperor, or some lost Legion Master whose name got scrubbed from the record.
I’ve still got the Forge World Badab War books on the shelf, Imperial Armour volumes 9 and 10. Bought them second-hand off a bloke at my local store who was thinning out his lead pile, and they cost me more than I’d like my life partner to know about. Alan Bligh wrote most of that material, and the thing about Bligh, God rest him, is that he loved to lay a hint down and then leave it there for you to trip over three pages later. He never once says the Carcharodons are Raven Guard. He describes the Terran Raven Guard in one book and the Space Sharks in another and lets you notice, on your own, that they fight the same, recruit the same, and carry the same nasty streak. He never once spells it out, and I don’t think he ever meant to.
Which is why I get a bit twitchy when people demand a definitive answer. There’s a version of 40K that wants every Chapter’s founding date and gene-line pinned to a spreadsheet, and I get the impulse, I’ve got a Cadian army whose entire charm is that it’s a known quantity. Give the Carcharodons a tidy origin and they collapse into just another Chapter with a paint gimmick. They’ve got far more in common with the Dark Krakens, a Chapter that had to build an identity out of nothing, than with anyone holding a proper Founding certificate.
The Red Tithe, and what loyalty costs
The other thing about the Carcharodons is how they keep their numbers up. They don’t have a homeworld feeding them recruits, or they didn’t until fairly recently, when they were handed the old Mantis Warriors planet as a reward. A fleet with no fixed base has a recruitment problem, the same one the Black Templars solved by simply never dropping anchor. The Space Sharks solved it with something called the Red Tithe.
The Red Tithe works like this. The fleet arrives at some Imperial world, usually a feudal or backwater one, and takes people. The strongest candidates go into the trials to become Astartes. Everyone else, or a great many of everyone else, gets taken as well, as serfs, as slaves, as raw material for a war machine that has to be entirely self-sufficient because there’s no supply line out where they operate. To the people on that world, a Carcharodons arrival plays out like a debt collector turning up on the doorstep, except the debt is your children and nobody down there gets a say in the total.
And these are the loyalists. This is the Chapter on your side.
So, yeah. The Space Sharks. Loyal to the Emperor, absolutely. Terrifying to just about everyone they’re loyal on behalf of. There’s a bit in the lore where Tyberos, run to ground chasing fleeing Mantis Warriors during the Badab War, kills a load of civilians, children included, because they happened to be in the way. I’ve seen people online say even some Chaos Marines would have balked at that, which, I don’t know, feels like a stretch to me, Chaos Marines aren’t famously tender. But the shape of the complaint is fair. The distance between the Carcharodons and the things they hunt is thinner than the Imperium would ever admit in writing.
I’ll be honest, some of the newer Tyberos material reads like fan fiction to me. The lone apex-predator posturing, the twin lightning claws with actual chewing mouths built into them called Hunger and Slake, the whole “reaper lord of the void” business. It tips over. And then I remember that he took those claws off the Ashen Claws, a renegade warband the Carcharodons are somehow on trading terms with despite the Ashen Claws having gone rogue, and that little detail, marines who’ll deal with outright renegades for spare parts and fresh blood, is so much more interesting than any amount of edgelord wargear. So maybe I mind the claws less than I said I did.
There’s a curse on them too, or a condition, and it arrives in stages. It starts with a coldness: the warrior goes formal, starts speaking in High Gothic, pulls away from the others. After that comes the mercilessness, where he stops taking prisoners and stops sparing anyone at all. The last stage is silence, total silence, where he no longer speaks to his own brothers, takes his missions alone, and eventually walks off into the dark to hunt by himself until the day he doesn’t come back. A warrior whose loyalty to humanity never once wavers, right up until he can no longer say a word to a single human being. The shark teeth and the war-paint all sit on top of that.
I bought the Forge World Tyberos model years ago, in resin, back when he was still a Forge World-only thing. He’s a lovely, chunky, horrible sculpt and the claws are enormous. He is also, as I type this, sitting primed grey in a drawer, unpainted, because I looked at all that Terminator armour and all those denticles and my nerve simply failed. He’s been in there something like eight years, which is longer than my daughter’s been alive, and in that same stretch Pete’s finished three entire Salamanders armies. I’m not proud of the drawer.
What actually makes them work
The Carcharodons cut themselves loose from the whole apparatus, the Astronomican, the recruitment worlds, the oversight, the audit, and became something the Imperium technically owns but can’t really see. When the file on your loyal Chapter reads “provenance: unknown,” you’re trusting the results and choosing not to ask the follow-up questions, which is about the most Imperial way there is to run a galaxy. The Deathwatch at least keep a register of which Chapter every borrowed marine came from; with the Space Sharks, even that much is a blank.
If you want a way into the lore, MacNiven’s Red Tithe is where to start, and it’s the one getting the special-edition treatment now, alongside Void Exile. Just don’t go in expecting to come out the far side certain the good guys are good.
