Not mine: https://civitai.com/models/1126417/double-deck-illustrious-style-and-character-set

The keyword are 'double deck, monster girl, erotic monster, erotic creature' but you can use specific characters details and features like :
- 'faceless, no face, no eyes, mouth, lips, no nose' for characters with only lips/mouth on head
- 'faceless, no face, no eyes, no mouth, no nose' for characters with no face feature on head
- 'headless, no head, faceless, no eyes, no mouth, no nose' for characters without a human head

To help getting creature more like Double Deck creation, you can use the current character prompt 'mature woman, large body, thick, curvy, voluptuous, huge breasts, sagging breast, tall woman, larger female'

For more specific character in Double Deck work, you can you this one :
- 'robot girl', 'android', 'tesla girl' and 'assaultron' to generate robot
- 'silent hill' plus 'pyramid head' or 'bubble head nurse', which are more chaotic during generation
- 'white and black' for the original style, or 'colored picture' to force painted variant of the style

List of all raw characters prompts (may need for some adjustments) :

- Anthro

• dd_raccoon, anthro girl, raccoon girl, raccoon, monster girl, slit pupils, animal hands, paws, claws, blonde girl, raccoon tail, raccoon ears, raccoon nose, blonde girl, brown fur, two tone body, large areola, enormous breast

• dd_frog, anthro female, frog girl, wet pussy, green body, long toes, long fingers, 2 eyes, sagging breasts, frog head, frog eyes, frog legs

• dd_deer, anthro girl, deer girl, deer, furry, fur, fur on chest, deer ears, huge breast, boots, jacket, panty, bra, underwear, nipple poking through clothes

- Feral

• dd_jaggia, monster hunter, jaggia, lizard girl, dog ears, lizard skin, claws, feral girl, brown scale

- Animatronic

• bb_fnaf, bb_fnaf_bear, fredina nightclub, fnaf, freddy, fredina, cally3D, anthro girl, bear girl, bear ears, gynomorph, gloves, thighhighs, boots

• bb_fnaf, bb_fnaf_bunny, fredina nightclub, fnaf, bonnie, bonny, cally3D, anthro girl, rabbit girl, short hair, hair over eye, open eye, purple eye, purple hair, purple body, rabbit ears, huge breast, reverted nipples, gynomorph,

• bb_fnaf, bb_fnaf_chica, fredina nightclub, fnaf, chica, anthro girl, bird, bird girl, bold, peak, bird mouth, colored body, yellow body, animatronics, robot joints, thick thighs, medium breast,

- Mushroom type

• dd_mushroom_arm, monster girl, erotic monster, red mushroom, red, red head, mushroom creature, mushroom creature, mushroom, humanoid mushroom, monster girl, plant monster, plant creature, mushroom monster, eyeless, 2 arms, tall woman, curvy, huge breast, conical mushroom, conical mushroom hat, medium radius mushroom hat, headless, no head, faceless, no eyes, no mouth, no nose

• dd_mushroom_armless_feet, monster, erotic creature, red mushroom, red, red head, mushroom creature, mushroom, humanoid mushroom, mushroom girl, ((no arm, armless), feet, barefoot), eyeless, no face, conical mushroom, conical mushroom hat, small radius mushroom hat, headless, no head

• dd_mushroom_armless_mush, med mushroom, red , red head, monster, erotic creature, mushroom creature, mushroom, humanoid mushroom, plant monster, plant creature, mushroom monster, standing, ((no arm, armless)), double deck, no face, pussy, conical mushroom, conical mushroom hat, small radius mushroom hat, mushroom feet, mushroom foot, headless, no head

• dd_mushroom_creeper, mushroom creeper, monster, erotic monster, mushroom creature, mushroom, plant monster, plant creature, 4legs, no arm, eyeless, conical mushroom, conical mushroom hat, medium radius mushroom hat, no head, faceless, no eyes, no mouth, no nose, pussy, spread legs, multiple legs, no upper limbs, creeper,

- Horror Monster

• dd_bubblehead, bubble_head_nurse_silent_hill, silent hill, bubble head nurse, monster girl, faceless, no face, no eyes, eyeless, mouth, no nose, nurse hat, white shirt, long shirt, high heels,

• dd_pyramidhead, pyramid_head_silent_hill, monster girl, eyeless, silent hill, pyramid head, large breast, thick thighs,

• dd_licker, licker_monster_silent_hill, licker monster, brain, brain head, fit, muscular body, slim body, medium breast, reverse nipple, inverted nipple, silent hill, faceless, eyeless, no nose, mouth, monster girl,

• dd_zipper, zipper_girl_silent_hill, zipper girl, monster girl, silent hill, inside black suit, fat, faceless, no face, no eyes, eyeless, mouth, lips, nose

• bb_venus, venus_silent_hill, 1girl, double deck, large areola, large breast, sagging breast, monster girl, silent hill, eyeless, venus of willendorf, tongue out, faceless, no face, no eyes, mouth, lips, no nose

• dd_alcina, resident evil, large woman, alcina dimitrescu, dark hair, short hair, curvy, huge breast, thick thighs, large butt, large hat, white dress,

- Underground Creature

• dd_breed, dd_breed_bi, blank monster, underground monster, bipede underground monster, humanoid, lips, thick body, large areola, huge breasts, faceless, no face, no eyes, mouth, lips, no nose, no ear,

• dd_breed, dd_breed_quad, blank monster, underground monster, quadripede underground monster, feral, large areola, dark areola, huge breasts, faceless, no face, no eyes, mouth, lips, no nose, no ear, animal limbs, animal legs, (feral, blank body, clog, cow leg, cow foot)

Plant Monster

• dd_plant_tree, monster, tree, erotic monster, tree monster, plant monster, plant creature, humanoid tree, humanoid, monster girl, trap, humanoid, large areola, no arm, no feet, legs, curvy, large breast, headless, no face, headless, no foot,

• dd_plant_tulip, monster, erotic creature, plant monster, plant creature, flower monster, leg up, up side down body, yellow flower, large flower, legs in flower, creature in flower, joined legs, lower body, no arm, ass up, tall woman, headless, no head, faceless, yellow petal, tulip, tulip flower, woman body in object, woman body in trap,

• dd_plant_leaf, monster, leaf, erotic creature, leaf monster, plant monster, plant creature, humanoid leaf, humanoid, monster girl, trap, humanoid, humanoid trap, on leaf, spread legs, faceless, headless, eyeless, sagging breast, no arm, spread legs, from above, body on leaf, creature on leaf, large leaf, woman body in object, woman body in trap, purple leaf, large purple leaf,

• dd_plant_pit_inside, monster, carnivous plant, pitcher plant, erotic creature, pitcher monster, plant monster, plant creature, humanoid, monster girl, trap, humanoid, humanoid trap, in pitcher leaf, legs up, faceless, eyeless, sagging breast, huge breast, spread breast, pussy, large pussy, labia, large labia, no arm, spread legs, lip, lips,

• dd_piranhna_large, dd_piranhna, plant girl, piranha plant, creature, erotic creature,leaf arms, eyeless, green body, red head, colored picture, lips, no face, no eyes, no nose, large mouth, huge lips

• dd_piranhna_small, dd_piranhna, monster girl, plant girl, mini piranha plant,creature, erotic creature, eyeless, no leg, leaf arms, shortstack, potty, no face, no eyes, no nose, large mouth, large lips, green body, green skin, red head,

- Monster

• dd_exit8, the exit 8, (hidden wall woman, wall woman), ghost girl, shindere, (grid skin), blind, blind eyes

• monster, monster girl, erotic creature, cyclop, giant, no arm, bold, half closed eye, mono eye, 1eye, reverse nipple, inverted nipple, huge breast, large areola, no mouth, no nose,

• dd_piranhna_large, dd_piranhna,monster girl, plant girl, piranha plant, creature, erotic creature, leaf arms, eyeless, green body, lips, no face, no eyes, no nose, large mouth, huge lips, green body, green skin, red head,

Check original link for rest of the tags: https://civitai.com/models/1126417/double-deck-illustrious-style-and-character-set