I’ve wasted hours trying to mod the wrong Vastaywar.
You have too.
Which Vastaywar Can You Mod?
That question stops most players cold.
They slap a mod on a companion only to watch it vanish.
Or worse. They skip modding altogether because they’re not sure what works.
This isn’t guesswork. It’s about knowing exactly which ones accept mods (and) which don’t.
Some Vastaywar take every mod you throw at them. Others won’t take any. And a few?
They only take certain types.
You don’t need theory. You need a straight list. No fluff.
No exceptions buried in patch notes.
This guide gives you that list. It saves time. It saves resources.
It makes your companions hit harder and last longer.
Read this first. Before you waste another mod slot.
What a Vastaywar Actually Is
A Vastaywar is a special companion (not) just any creature you pick up. It’s one with personality, presence, and purpose. (You’ll know it when you see it.)
I explain what Vastaywar means right here on the Vastaywar page.
Modding isn’t magic. It’s adding upgrades. Like better armor, sharper claws, or faster reflexes.
Not every companion is a Vastaywar. And only Vastaywar have mod slots. Don’t waste time trying to mod a basic fox or a stray wolf.
You slot them in. They work. That’s it.
They won’t take it.
Which Vastaywar Can You Mod? Only the ones built for it. Each type has its own slots.
Some hold two mods, others three. Some even let you swap mid-fight.
Why bother? Because modding changes how your companion fights. More damage.
Less flinching. Better crowd control. Real impact.
You don’t need ten mods to win. One well-placed mod fixes a real problem.
Think about your last fight. Did your companion die too fast? Miss too often?
That’s where modding helps.
No fluff. No hype. Just tools that do what they say.
Which Vastaywar Can You Mod
Kavats and Kubrows are the only moddable Vastaywar. No exceptions. No workarounds.
I’ve tried.
You’ve probably tried too.
Kavats are feline. Sleek. Fast.
They sit on your shoulder or pad beside you like they own the place. They boost key chance. Steal resources from enemies.
Some even charm them (Smeeta does this. It’s annoying and useful).
Kubrows are canine. Stockier. Louder.
They bark at enemies before biting. They deal damage. Stun groups.
Heal you mid-fight. Adarza Kavat? No.
That’s a cat. Adarza Kubrow? Doesn’t exist.
(Don’t ask me why the naming is weird.)
Breeds matter. A Smeeta Kavat modding path looks nothing like an Adarza Kavat’s. Same for Kubrows.
The Raptor’s crowd control doesn’t line up with the Croucher’s health regen.
You don’t just buy these. You breed them. Or finish a quest chain that takes three days and makes you question your life choices.
That breeding step? That’s where modding starts. Not at the market.
Not in a vendor menu. At the incubator. With genetic rolls and failed mutations.
Which Vastaywar Can You Mod? Only these two. And only if you’ve done the work first.
You’re already thinking: What about the new one coming next update?
Yeah. I’m thinking it too. But right now?
Just Kavats and Kubrows. Nothing else counts.
How Companion Mods Actually Work
Kavats and Kubrows get their own mod slots. Just like your Warframe.
I used to think they were just pets. (Spoiler: they’re not.)
They take general mods. Health, armor, damage (and) attack mods. But the real game-changers are precept mods.
Precept mods trigger on conditions. Fetch makes a Kubrow grab dropped loot. Charm lets a Kavat distract enemies. They’re not passive. They’re reactive.
Which Vastaywar Can You Mod? That’s the wrong question. (It’s not about “which”.
It’s about what your companion does in your loadout.)
A tanky Kubrow needs Animal Instinct, Ferocity, and Shield Disruption. A utility Kavat runs Charm, Molt, and Pestilence. Breed matters less than role.
You want damage? Skip shield mods. You want survivability?
Ditch the attack speed boost.
I wasted weeks stacking armor on a Kavat that died to AoE anyway. (Turns out mobility beats bulk when you’re tiny and fluffy.)
Mod choice isn’t theorycrafting (it’s) what happens when your Kubrow eats a grenade for you.
Want to see how players actually build them? learn more in this guide.
Precept mods don’t auto-win fights. But they fix mistakes. Like when you forget to revive yourself.
That’s where most people mess up. They mod for stats (not) for moments.
Non-Moddable Companions Are a Trap
You try to slot a Kavat mod into your Sentinel. It doesn’t fit. You’re confused.
I was too.
Sentinels, MOAs, Predasites, Vulpaphylas. They’re not Vastaywar. So they don’t take Vastaywar mods.
Which Vastaywar Can You Mod? Just Kavats and Kubrows. That’s it.
Sentinels use their own separate mod slots. Not the same interface. Not the same pool.
You can’t even open the Vastaywar mod menu for them.
Predasites and Vulpaphylas? They get linked abilities instead. No modding at all.
Just equip and go.
MOAs run on entirely different systems. Their upgrades are built-in or mission-locked. No modding there either.
It’s easy to assume all companions work the same way. They don’t. And trying to force it wastes time.
You’ve already lost ten minutes fumbling with a Sentinel mod screen that won’t open. I have too.
Why does the game let you hover over a mod and show “Incompatible” instead of just hiding it?
You want customization. You deserve clarity. Not guesswork.
If it’s not a Kavat or Kubrow, stop looking for Vastaywar mods. Full stop.
The system isn’t broken. It’s just specific. And yeah (it’s) annoying until you know the line.
Mod Your Companion Like You Mean It
I mod my Kavat based on what I need in a fight. Not what the wiki says. Not what some streamer runs.
You pick mods that fix real problems. My Kubrow dies too fast? I slap on Steel Fiber.
My Vastaywar misses too much? I go for Animal Instinct.
Which Vastaywar Can You Mod? All of them. But not all breeds play the same way.
A Rakshasa Kavat hits hard and fast. A Smeeta Kavat distracts and dodges. Know the difference.
Rank your mods. A maxed Animal Instinct does more than a rank 0 one. Obvious?
Try one mod set for three missions. Then swap something out. See what sticks.
Maybe. Still true.
And if your laptop chokes on Vastaywar’s animations, you’ll need to know which laptops can run vastaywar.
Your Vastaywar Are Ready. So Are You.
Which Vastaywar Can You Mod? Kavats and Kubrows. That’s it.
No guesswork. No wasted slots.
I used to stare at my inventory wondering why my other companions wouldn’t take mods. Frustrating. Wasted time.
You want power. You want control. You want your companion to survive and fight back.
Knowing this changes everything. It lets you build something real (not) just flashy, but tough, smart, and yours.
Go grab a Kavat or Kubrow right now. Not later. Not after “one more mission.” Now.
Open the mod screen. Slot in that first mod. Watch it click.
You already know what works. You just needed confirmation.
So stop hesitating.
Go forth, Tenno, and unleash the full potential of your loyal Vastaywar!