Nytro, as designed by Fluff-Kevlar. Fur Affinity account: https://www.furaffinity.net/user/fluff-kevlar/

Suggested tags male: Nytro_FK_NoobAI, 1boy, abs, obliques, muscular, ear fluff, red hair, very long hair, red fur tufts on elbows, two-tone fur, black belly fur, grey fur, grey face fur, dark fur, heterochromia, yellow eyes, blue eyes, eye scar, scar over yellow eye, scars, earrings, furry<lora:Nytro_FK_NoobAI:1>

Suggested tags female: Nytro_FK_NoobAI, 1girl, medium breasts, abs, obliques, muscular, ear fluff, red hair, very long hair, red fur tufts on elbows, two-tone fur, black belly fur, grey fur, grey face fur, dark fur, heterochromia, yellow eyes, blue eyes, eye scar, scar over yellow eye, scars, earrings, furry<lora:Nytro_FK_NoobAI:1>

Trained on https://civarchive.com/models/916326?modelVersionId=1198073 using 18 images with basic SmilingWolf_wd-swinv2-tagger-v3 captionning on kohya-ss. Physical attribute tag were removed. Reinforcement tags are necessary, though you may want to make up your own if you notice strange results.

Technically, the female version of Nytro is named Talia, but for ease of use it's Nytro for both male and female version. I struggled to get the model to learn the details, so I overbaked it a bit. I might upload an earlier version if asked, but this version gives good enough results for me.

Tips, both constructive comments and Buzz are appreciated :)