I had fun with this one! I only did one Pokemon each, but I added in moves that would fit!
Sanzo gets Absol. It was between this guy and mewtwo because of several reasons. Ultimately I went with absol. Its look kind of reminds me of Sanzo, the whiteness of the fur and the Houshi robes. Absol’s move set mimic how I see the priest’s fighting style. Sanzo tends to be an evasive fighter and takes opportunities when dealing with Youkai. He also has a keen sense and able to tell if he’s being snuck up on. Future sight made me think of Sanzo’s Makai Tenjo; it takes time to set up, but when it hits, it HURTS.
Goku gets an Infernape for a lot of reasons! Infernape is based on the monkey king, so it makes sense to pair him up with our favorite monkey. Not only that, but this Pokemon is very agile and speedy, dealing in close range combat. Because Goku likes to talk big sometimes, taunt seemed to fit for infernape. Acrobatics is added in due to Goku’s ability to leap and dodge. It’s a scrawny looking monkey but definitely a powerhouse, just like Goku. (Side note: In the anime there’s an infernape that goes crazy and can’t be controlled! Familiar?)
Hakkai gets a Gallade. I knew Hakkai needed a psychic type, but I also wanted one that could heal, so the best choice was this special evolution of ralts. Hakkai uses spiritual energy for attacking, defense, and healing, so it feels reasonable to give him a Pokemon that meets that need. Gallade has a well rounded skill set but has low defense. With the ability to protect, it increases its chance to survive. Leaf blade was inspired by Hakkai’s youkai markings, vines that appear along him that can be used to attack and constrain. Psycho cut was selected because… well… we know of Hakkai’s past…
Gojyo gets a Bisharp. I could see Gojyo getting a dark type Pokemon (being a man on the prowl at night, hahaha…I’mSorry) and bisharp seemed like a perfect fit with those blades along its body. The move set is based on Gojyo’s Shakujo. Metal Claw and Night Slash should be self explanatory, but Assurance? Well, we’ve seen that when Gojyo’s getting injured, he’ll come back even fiercer as he gets more serious. Guillotine is appropriate considering his common method of youkai execution. I imagine his Bisharp being male and also being interested in the ladies as well, bowing like a gentle knight in shining armor.