Kaiju / Pacific Rim monsters in Pathfinder (SPOILER WARNING!)


Homebrew and House Rules


I want to introduce kaiju into my game in a manner similar to that in Pacific Rim (coming through a planar rift). I know that they would need to be Colossal size, but other than that...any thoughts?

I'm running a Numerian campaign right now, and I plan on going planet hopping in the future.


I know this doesn't help you right now, but there will be kaiju statted up in this fall's Bestiary 4! :-)


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baronbloodbath wrote:
I want to introduce kaiju into my game in a manner similar to that in Pacific Rim (coming through a planar rift). I know that they would need to be Colossal size, but other than that...any thoughts?

If I were building my own, I'd probably feel a need to give them Throw Anything for when I had them start hurling carriages at the PCs.

If you want to make them more like the creatures in the movie, you might give them toxic/acidic blood. That way, in addition to killing them, your PCs might have to find a way to do so away from population centers.

Liberty's Edge

I believe every Kaiju was supposed to be unique, the only thing they all had in common was that they had acidic blood (which broke down their bodies post haste post mortem), were gigantic, and were amphibious.

Depending on the levels where you want to introduce them I'd find me some colossal creature(s) to use as a template, make them aberrations, maybe give them a spell like or two, and send 'em in.

Shadow Lodge

Pathfinder Lost Omens, Rulebook, Starfinder Adventure Path, Starfinder Roleplaying Game Subscriber

You could always wait until the Bestiary 4 releases.

Grand Lodge

Pathfinder Lost Omens, Rulebook Subscriber

I'd use the tarrasque as a reference point. The tarrasque sure looks a hell of a lot like Trespasser from the movie. Then give the PCs access to an enormous battle golem and...or something...

But they would definitely be colossal, aberrations, and each would have unique feature (flight, anti-magic field, ability to breath fire or whatever) that sets them apart.


I believe an issue of Dragon had stats for Kaiju....


baronbloodbath wrote:
I want to introduce kaiju into my game in a manner similar to that in Pacific Rim (coming through a planar rift). I know that they would need to be Colossal size, but other than that...any thoughts?

Those things were like Tarrasques, I hope your party is at least level 15+.

It should be impossible for level 10s to beat them.


A few things I'm trying for my own giant (or at least really big) monster rules to capture the feel of giant monsters from video games (especially monster hunter)

1)When they hit things, they should go flying. Let them use awesome blow as a free action whenever they do damage, maybe even improve the distance thrown.
2)When they make an attack, it doesn't just hit one enemy, it's an aoe. I dunno how to do this one. great cleave could work, or make them attack everything in a cone equal to their reach.
3)When they move, they should knock aside everything in their path. give them improved/greater overrun and let them do it as a free action as part of any move (not a 5'step).
4)They should be fast, even a single move for them they should outpace a double-moving pc. Let them 5' step more than 5'.
5)Difficult terrain? Hah, not for something this big. Maybe a building or piece of terrain they have to smash through.
6)Built in ranged attack. Combine with points 1 and 2. Effective max range is 'can it see you?'

Other stuff like that that gives the feel of 'we are flies to this thing'


Spawn of Rovagug.


ClarkKent07 wrote:
I believe an issue of Dragon had stats for Kaiju....

Don't remember the issue number, but yeah there was a Kaiju template. I used it twice. Great fun.

I created a 9th level spell that basically applied that kaiju template to PCs. So the PC could fight a Kaiju one one on. Lots of drawbacks, so the only time you would want to use it is when you were actually facing a Kaiju.

The players understood what I was after and it didn't get abused.


The Drunken Dragon wrote:
Then give the PCs access to an enormous battle golem and...or something...

A particular PFS Scenario had exactly that - piloted by a PC against what was basically King Kong. Just sayin.

Liberty's Edge

Shifty wrote:
The Drunken Dragon wrote:
Then give the PCs access to an enormous battle golem and...or something...
A particular PFS Scenario had exactly that - piloted by a PC against what was basically King Kong. Just sayin.

Would you happen to know which PFS scenario that was?


Scenario Name:

#2-02: Before the Dawn—Part II: Rescue at Azlant Ridge


You actually don't need stats. You just need to establish a means by which the players can win.

Pull the ancient medusas head from the bag. Have them unleash a powerful canon that only shoots once. Drop a flying castle on it. Etc.

If you really want to have them fight it, a mech-like vehicle that the whole party can use with combat options for each player would work. Like a chest lens that amplifies the wizard's spells. A giant bolt launcher the rogue could fire from surprise. A transducer that lets the cleric use positive energy to repair the mech. Finally, the fighter at the helm using a pair of slam attacks that mimic his weapons of choice (with all applicable bonus').

Then you'd need some stats, or an aquatic tarrasque.


Darigaaz the Igniter wrote:

A few things I'm trying for my own giant (or at least really big) monster rules to capture the feel of giant monsters from video games (especially monster hunter)

1)When they hit things, they should go flying. Let them use awesome blow as a free action whenever they do damage, maybe even improve the distance thrown.
2)When they make an attack, it doesn't just hit one enemy, it's an aoe. I dunno how to do this one. great cleave could work, or make them attack everything in a cone equal to their reach.
3)When they move, they should knock aside everything in their path. give them improved/greater overrun and let them do it as a free action as part of any move (not a 5'step).
4)They should be fast, even a single move for them they should outpace a double-moving pc. Let them 5' step more than 5'.
5)Difficult terrain? Hah, not for something this big. Maybe a building or piece of terrain they have to smash through.
6)Built in ranged attack. Combine with points 1 and 2. Effective max range is 'can it see you?'

Other stuff like that that gives the feel of 'we are flies to this thing'

Great ideas. Awesome Blow is a necessity.


Shane LeRose wrote:

You actually don't need stats. You just need to establish a means by which the players can win.

Pull the ancient medusas head from the bag. Have them unleash a powerful canon that only shoots once. Drop a flying castle on it. Etc.

If you really want to have them fight it, a mech-like vehicle that the whole party can use with combat options for each player would work. Like a chest lens that amplifies the wizard's spells. A giant bolt launcher the rogue could fire from surprise. A transducer that lets the cleric use positive energy to repair the mech. Finally, the fighter at the helm using a pair of slam attacks that mimic his weapons of choice (with all applicable bonus').

Then you'd need some stats, or an aquatic tarrasque.

I'm thinking of letting my players capture one of the "Annihilator" Robots from the Inner Sea Bestiary...using the Construct Armor ability they would be able to climb inside and do battle with monstrous things from beyond the beyond.


Point of interest, I asked JJ about wether any existing monsters will become Kaiju with the arrival of bestiary 4. He said no, Kaiju will be an entirely new classification of monster and they will be LARGER and MORE POWERFUL than the Tarrasque.

Proof of the pudding


These are probably not exactly what you are looking for, but these are some of the biggest monsters I can find in pathfinder.

Sea Bonze. I don't know why that thing is only gargantuan. It seems to easily be a few hundred feet tall. It's in bestiary 3

Sea Serpent at 25HD; noted to be over 300 feet long at that amount of HD. It's in the first bestiary.

Also, I was wondering how big the Tarrasque is supposed to be. Is it still 50ft. tall like it was in 3.5 or is it bigger now due to it's higher CR? If it's still meant to be 50ft. tall, then there are many monsters bigger than it.


- The behemoths are nice kaiju-like creatures.
- Scorpions, crabs, spiders, centipedes, cockroachs, jellyfishes, solifugids and anemones have Colossal counterparts.
- Some dragons are Colossal.
- The linnorms are Colossal.
- A deep crimson worm (purple worm variant) is Colossal.
- A carnivorous blob is Colossal.
- A mu spore is Colossal.
- A nightwave is Colossal.
- A iathavos qlippoth is Colossal.
- A sard is Colossal.
- Titans are Colossal.
- A great white whale is Colossal.
- A humbaba is Colossal.
- A charnel colossus is Colossal.
- A deadly mantis is Colossal.
- Spawns of Rovagug are Colossal.

Y'know, now that I recheck this, the work from Rovagug could work very well with your desire to have Kaiju monsters. According to Gods & Magic, it is said that Rovagug can be responsible for causing volcanic eruptions, earthquakes and storms, all of which can cause a planar rift. If you apply the fiendish or half-fiend Template to a Colossal vermin, you essentially got yourself a believable kaiju as a Messenger of Rovagug. You can add Colossal/advanced ants, beetles, leeches, slugs, wasps, bees, dragonflies, flies, mosquitos, ticks, ant lions and rot grubs to the swarm as well.

Have the PCs seek the aid of a group of Azruverdas to stop the vermin.

As for other kinds of kaiju, this template can help.

As for the machines... hmmm... I've been working on this lately.

Hope that helps :)


Sauce987654321 wrote:

These are probably not exactly what you are looking for, but these are some of the biggest monsters I can find in pathfinder.

Sea Bonze. I don't know why that thing is only gargantuan. It seems to easily be a few hundred feet tall. It's in bestiary 3

Sea Serpent at 25HD; noted to be over 300 feet long at that amount of HD. It's in the first bestiary.

Also, I was wondering how big the Tarrasque is supposed to be. Is it still 50ft. tall like it was in 3.5 or is it bigger now due to it's higher CR? If it's still meant to be 50ft. tall, then there are many monsters bigger than it.

The Council of Thieves AP has the Aspidochelone which is a whale the size of a small island. People have tried to settle on these beasts no knowing they weren't actually land mass. They are several hundreds of feet long and can grow to over a thousand feet length, if i recall correctly.


JiCi wrote:

- The behemoths are nice kaiju-like creatures.

- Scorpions, crabs, spiders, centipedes, cockroachs, jellyfishes, solifugids and anemones have Colossal counterparts.
- Some dragons are Colossal.
- The linnorms are Colossal.
- A deep crimson worm (purple worm variant) is Colossal.
- A carnivorous blob is Colossal.
- A mu spore is Colossal.
- A nightwave is Colossal.
- A iathavos qlippoth is Colossal.
- A sard is Colossal.
- Titans are Colossal.
- A great white whale is Colossal.
- A humbaba is Colossal.
- A charnel colossus is Colossal.
- A deadly mantis is Colossal.
- Spawns of Rovagug are Colossal.

Y'know, now that I recheck this, the work from Rovagug could work very well with your desire to have Kaiju monsters. According to Gods & Magic, it is said that Rovagug can be responsible for causing volcanic eruptions, earthquakes and storms, all of which can cause a planar rift. If you apply the fiendish or half-fiend Template to a Colossal vermin, you essentially got yourself a believable kaiju as a Messenger of Rovagug. You can add Colossal/advanced ants, beetles, leeches, slugs, wasps, bees, dragonflies, flies, mosquitos, ticks, ant lions and rot grubs to the swarm as well.

Have the PCs seek the aid of a group of Azruverdas to stop the vermin.

As for other kinds of kaiju, this template can help.

As for the machines... hmmm... I've been working on this lately.

Hope that helps :)

I like your robot template. I need to figure out a way to introduce impressive mechs without going overboard.

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