Here is what I'm thinking
>Dicks Wearing Hats
Low level monsters. The goblins/kobolds of the setting
>Sentient Suitcases
Mimics. Sometimes harmless pranksters, sometimes killers.
>/pols/
Tribal monsters, they are proud and violent. They're usually led by a powerful /pol/ they call "Fuhrer". They're also rivals to Dindus.
>Dindus
Like /pol/s, they're semi intelligent tribal monsters, but unlike /pol/s they're not pure evil and may feel guilty for their actions. A Hue Dindo is a powerful Dindu that have developed a strong affinity with soccer. Its usually dressed in green and yellow.
>Morris Dancers
They're misterious but polite monsters. Usually in packs, they're music lover nomads that travel while dancing. They search for treasure, adventure and other small pleasures. If feeling threatened, they immediately attack, usually with sticks, swords or handkerchiefs, which they carry.
>Blonde Girls in Lion Costumes
They're strong, hungry beasts. Using their misleading appearance they may try to bait their prey. They share their love for junk food with NEETs, and sometimes are found in their caves. They hunt anime girls and put them in lion suits, transforming them into Blonde Girls in Lion Costumes.
>NEETs
Savage and pale, they only live their dark caves to get junk food. They come in two sizes: Lanky and Slob. They're like the trolls or ogres of the setting.
>Damn Straights
Hell demons. They're powerful, but just. They may try to get your soul, but don't rely on any tricks. It's a straight deal, through and through.
>Tuesdays
A cursed day. It's as if the world itself doesn't want you to live till wednesday. Dangerous unlikely coincidences may happen, so most people just hide and pray until the day is over.
>Dragon Dildos
Giant, intelligent and powerful monsters. The dragons of the setting, coming in different shapes, sizes and colors, which determine what type of squirt they shoot.
They are! That's just my idea for exemplifying each one.