Gelatinous Cube

The Gelatinous Cube is a simple creature. It's just mindless block of ooze, shuffling around looking for something to eat. Some days I can empathize. In my mind, a gelatinous cube is more of a classic dungeon-crawling "gotcha" than really something interesting to encounter. Found usually for no good reason other than "you're in a dungeon," the gelatinous cube doesn't pose much threat to a prepared party. It's very slow, has nothing for a Reflex save, and despite having low AC, ooze immunities make it impossible to crit, removing the largest penalty PF2e would give it based on the crit rules. It's a sack of hit points that tries to eat you, nothing new here.

The mindless trait implies to me that gelatinous cubes are predictable; they will always move in the direction of food and will not make snap decisions about who is attacking them or what the biggest threat is. This means that gelatinous cubes might be best used either in groups or in service to a smarter beast that can exploit them. A maniacal wizard dropping gelatinous cubes from traps in the ceiling? Sure. A kitchen using a gelatinous cube as a primeval garbage disposal? Ship it.

This is also a great monster to make sure you understand PF2e's incapacitation trait. Any creature more than double the level of the gelatinous cube treats its saving throw against the cube's Paralysis ability as one degree of success better. This puts an upper limit on how effective the cube can really be when using it as a minion of sorts. You could also use it intentionally as a minor roadblock at higher levels, integrating it more fluidly with traps. Are the PCs mostly going to succeed their saving throws based on the Incapacitation trait? Sure. But critical failures still exist, and they might just show up at the most inconvenient time.

Hook 1 (TJ) - Secret Ingredient

The sous-chef of the Gilded Goose is in desperate need of some assistance. The regent of Haliford is making his bi-annual visit and will undoubtedly be stopping by for his favorite gelatin dessert. If you're willing to take a vow of silence and a bag of gold for your troubles, the sous-chef has the key for the cellar where the secret ingredient is kept. As long as you're confident you can subdue (but not kill!) the largest gelatinous cube you've ever seen, you'll have the sous-chef's gratitude, and perhaps an audience with the regent.

Hook 2 (Max) - Ancient Armory

In the old ruins south of the town, it's well known that beneath the keep is a small, dark chamber that once served as an armory. Most of the armaments lay in disrepair, though one set of beautiful armor remains untouched by the passage of time; an ornamental plate, pure black with golden embellishments. Its visor is up, revealing it empty. A keen eye, however, might spot a tinge of movement as if flowing water fills the ancient armor.

Hook 3 (Nemanja) - Labyrimpthian

While following an insane, teleporting imp, a group of demon-hunters reach a deviously crafted dungeon; a labyrinthine realm composed entirely of mirrors, expertly placed pit traps, and several roaming gelatinous cubes. The imp seems to know the realm like the back of his hand, but letting him escape is not an option. Luckily, he seems to be enjoying the hunt a bit too much...