Pathfinder is a beloved system that many feel keeps the spirit of old school role playing alive. While Dungeons and Dragons continues to evolve, Pathfinder serves as a living preservation of what many felt was the best of D&D. The extensive library of homebrew materials created for D&D 3.5 is also kept alive through the Pathfinder system.
Paizo recently released the 2nd edition of the game. While it continues to be an easy to learn and flexible system, the 2nd edition expands the rules and universe even more. The 2e bestiary includes many familiar faces and legendary creatures. Horrors plucked straight from ancient history and modern abominations both await adventurers who dare to enter their realms.
10 Cerberus
This isn't your grandfather's three-headed dog. With putrid breath even milk bones can't mask, Cerberus looms over his enemies. If you're able to defeat the beast, he'll net your party more than 800,000 XP.
If his matted black fur and crimson eyes don't horrify you his voice certainly will. His howl can cause any living creature withing 600 feet to panic if they fail a DC32 will save. His bark is truly as bad as his bite. Backing up the stench of hos maw is a powerful poison breath weapon. Even the most powerful adventurers will struggle aginst this incredible beast.
9 Hekatonkheires
This titan is a CR 24, and so is pronouncing his name. The greek moniker means "hundred-handed one" and the beast comes by it honestly. Nothing can prepare even high-level parties for the horror of facing Hekatonkheires. This colossal outsider terrifies his foes with his 50 menacing heads and 100 arms, each one holding a unique weapon.
Hekatonkheires may be the most powerful of all of the titans. Even the gods that created them shunned them as abominations. They were cast to the edges of the multiverse to drift aimlessly in the void for eons. The vast expanse drove the creatures to madness.
8 Havero
The havero is a colossal aberration unlike any other. The beast is a wriggling, writhing mass of tentacles capable of sprouting claws, eyes and other horrible body parts. The horrific creature knows no fear and will fight until it's destroyed. There is no hope of surrender.
Armed with slashing tentacles and an acid spewer this versatile horror is capable of adapting to its environment and foes. The alien havero lies await in hibernation. Anyone who attempts to link minds with this awful beast risks their very sanity.
7 Firebleeder
There is no other horror quite like the firebleeder. This volcanic insectile beast skitters across the landscape leaving a trail of burnt destruction in its wake. The firebleeder resembles the horrific love child of a flightless dragon and a nightmare centipede. The colossal creature is plated with hardened obsidian scales which cover its molten insides.
The beast can unleash a devastating breath attack, bull rush and trample opponents, or crush with its enormous claws and even utilize lava bombs. This is no run-of-the-mill encounter. The firebleeder is sure to be a legendary tale for any party that crosses its path.
6 Tarrasque
The tarrasque is a creature out of time and place. It's like an enormous dinosaur wreaking havoc on all in its path. This colossal terror has been decimating adventuring parties since the first dice hit tabletop, but he's not lost any of his awful charms.
Not only is the tarassque nearly impossible to hit, but it can regenerate any damage it takes. Its regeneration ability can't be stopped by even death. You can't keep a good tarrasque down. The creature may be banished or otherwise transported, but actually vanquishing it is impossible.
5 Shipbwreaker
Seafaring adventurers will have no doubt heard the legends of crabs with claws the size of dinghies. Weighing in at 6 tons, these enormous crustaceans are the bane of those that sail the seas. They lie in wait in shallow seas to destroy unsuspecting ships, harvesting the terrified crew for food. Shripwrecker crabs are a massive 50 feet wide with giant arms that can extend an additional 30 feet.
Even the toughest ships stand no chance against it's crushing claws, as the beast can ignore up to 5 hardness as it deals 1 and 1/2 times its strength modifier in damage to the unsuspecting hulls of passing vessels. Encrusted with barnacles and draped in seagrass, the shipwrecker crab is a terrible sight to any sailor's eyes.
4 Jabberwock
The Jabberwok is a huge dragon which confuses foes with insane babble in a mixture of languages. If you're faced with this bizarre jabbering, you'll need to make a 31 will save to avoid becoming disoriented. With its long neck and terrible claws, this is a formidable creature that terrifies opponents on sight.
The Jabberwock has one fear—it's only weakness. Only those wielding a vorpal weapon stand a chance. If the Jabberwock takes damage from such a weapon it becomes shaken for one round. Land a critical hit with a vorpal weapon and the beast will be staggered.
3 The Mantis God
The Mantis God is an unimaginable horror. His size is beyond human comprehension. This horrific titan also goes by Achaekek. He's the patron god of assassins, and his symbol is two menacing, red mantis claws clasped as if in prayer. Among theologians, Achaekek's status as a deity is sometimes debatable. What is agreed upon is that he was the first entity created by the gods to do their bidding.
They feared his incredible powers of destruction so much that they limited his power upon his creation, ensuring he could never turn on those who made him. Should your party find themselves faced with He Who Walks In Blood, you'll have to get creative to survive. He can not take standard damage and can only be killed by gods and a few very specific legendary items.
2 The Oinodaemon
If you're looking to casually pick up over 100 million experience points then you may want to go after the Oinodaemon. That's the equivalent of over 10,000 levels. Should you decide to take on this foe, you better aim high; he Oinodaemon stands twice the height of an average human, and the horror doesn't stop there.
His head is that of a diseased and rotting Ram. His flesh Falls away in putrid clumps. His body is covered in blisters sores scabs and suppurating boils. Disgusting white foam drips from his mouth, and yellow goo pours from his bloodshot eyes.
1 Satan
Move over Tiamet, there's a new bad guy in town. if you're making a list of powerful monsters and ranking them, it's kind of hard to argue with Satan being number one. the Prince of Darkness has been spreading chaos and Destruction for over three thousand years
In the Pathfinder Universe, Satan stands at roughly 10 ft tall. His black leathery Wings form an imposing figure. With over 900 hit points, he's a formidable Foe for even the largest and highest level parties. The good news is if you're able to take down the lord of the pit you'll earn enough experience points to watch your level spin like an old-timey slot machine.