Resources used: (bare in mind that I do quite a lot of editing on pictures so you might not get quite the same results)

Photoshop
Stable Diffusion (Forge Flux) 
Extension: Forge Couple
Model:  furrytoonmix_xlIllustrious

Prompt Infos: 

Steps: 35, Sampler: Euler a, Schedule type: Automatic, CFG scale: 7, Seed: 2634439787, Size: 1024x1024, Model hash: 5246f81705, Model: yiffymix_v62Noobxl, Denoising strength: 0.2, Clip skip: 2, Mask blur: 4, Inpaint area: Only masked, Masked area padding: 32, Lora hashes: "StS-Illustrious-Detail-Slider-v1.0: 2e7a68ec7e2e", forge_couple: True, forge_couple_compatibility: True, forge_couple_mode: Advanced, forge_couple_separator: \n, forge_couple_mapping: "[[0, 0.5, 0, 1, 1], [0.5, 1, 0, 1, 1]]", forge_couple_common_parser: { }, Version: f2.0.1v1.10.1-previous-665-gae278f79

masterpiece, best quality, amazing quality, male, very aesthetic, high resolution, absurdres, <lora:StS-Illustrious-Detail-Slider-v1.0:3>, throne room, Bowser, smooth anime style, smirk, penis, balls, anthropomorphic, furry art, lifting foot,
masterpiece, best quality, amazing quality, male, very aesthetic, high resolution, absurdres, sonic the hedgehog \(series\), (Tails the Fox), (((tall, adult))), kneeling, kissing foot, balls, kissing foot, wide hips, foot worshipping, round rump, hugging foot, blushing, white gloves,

Negative prompt: realism, 3D,busty, ugly face, mutated hands, low res, blurry face, black and white, text, human, watermark, chubby, pubic hair, eyelashes, tears, piercing, lips, shoes , socks, eyelashes, plate, plates, ((((Female)))), ((breasts)), eye lashes, on car, eyelashes, Sonic, blue fur, nipples,

Background changes in SwarmUI: 

Grey Castle: 

{
  "sui_image_params": {
    "prompt": "Replace the background with a grey super Mario styled castle interior, Keep the person sitting on the throne exactly as they are: same pose, lighting, color, and detail. Don\u2019t alter the subject or throne. Remove the torches on the floor, ",
    "model": "FLUX_Kontext_Dev",
    "seed": 35830022,
    "steps": 40,
    "cfgscale": 1.0,
    "aspectratio": "Custom",
    "width": 1536,
    "height": 1536,
    "sampler": "euler_ancestral",
    "fluxguidancescale": 1.0,
    "initimagecreativity": 1.0,
    "maskblur": 4,
    "automaticvae": true,
    "negativeprompt": "",
    "swarm_version": "0.9.6.3"
  },
  "sui_extra_data": {
    "date": "2025-06-27",
    "initimage_filename": "TailsBowser.png",
    "initimage_resolution": "1536x1536",
    "prep_time": "0.33 sec",
    "generation_time": "3.43 min"
  },
  "sui_models": [
    {
      "name": "FLUX_Kontext_Dev.safetensors",
      "param": "model",
      "hash": "0x75bda215f4febf4a7024d23a4c18d09f99c3ce745f8ecec8faa5e68c2c4fa8aa"
    }
  ]
}

Throne Room: 

{
  "sui_image_params": {
    "prompt": "Replace the background with a luxurious throne room, Keep the person sitting on the throne exactly as they are: same pose, lighting, color, and detail. Don\u2019t alter the subject or throne. Remove the torches on the floor, ",
    "model": "FLUX_Kontext_Dev",
    "seed": 2060239147,
    "steps": 40,
    "cfgscale": 1.0,
    "aspectratio": "Custom",
    "width": 1536,
    "height": 1536,
    "sampler": "euler_ancestral",
    "fluxguidancescale": 1.0,
    "initimagecreativity": 1.0,
    "maskblur": 4,
    "automaticvae": true,
    "negativeprompt": "",
    "swarm_version": "0.9.6.3"
  },
  "sui_extra_data": {
    "date": "2025-06-27",
    "initimage_filename": "TailsBowser.png",
    "initimage_resolution": "1536x1536",
    "prep_time": "0.31 sec",
    "generation_time": "3.40 min"
  },
  "sui_models": [
    {
      "name": "FLUX_Kontext_Dev.safetensors",
      "param": "model",
      "hash": "0x75bda215f4febf4a7024d23a4c18d09f99c3ce745f8ecec8faa5e68c2c4fa8aa"
    }
  ]
}