Adderface, Shinguuji Korekiyo, the current medicine cat of CoastClan, alongside his old apprentice, Rabbitbloom (Fujisaki Chihiro). He’s an ex-warrior and his sister is Blackhaze, who he is not in an incestuous relationship with because ndrv3 canon sucks ass.
As a kit, Adderkit and his sister, Blackkit, were very close. His sister had always been sickly, so she ended up in the medicine cat den a lot. His parents doted over her a lot, and so did Adderkit, not wanting to leave his sister’s side. He learned a lot about herbs, and would have been a medicine cat apprentice had there been an opening. So he was reluctantly apprenticed as a warrior while his sister stayed in the medicine cat den.
He was a regular apprentice while training. Didn’t stand out too much to others. Stoic and having a creepy aura, staying on the sidelines as he did his duties. Honestly, he was more interested in the Warrior code and how it came about. Though he was disappointed that his sister couldn’t train with him, he still did everything required of him, and was named Adderface.
When the Medicine Cat apprentice passed away, Pearlstar (CoastClan’s leader before Whitestar) came to him and asked him to take up the apprentice spot. Adderface agreed without a second thought to it. However, Blackkit’s health had gotten better, and was made a Warrior apprentice, Blackpaw. Though Blackpaw still ended up in the medicine cat den a lot for check ups. Though her health was better, her immune system is still really bad and she gets sick a lot.
So Adderface trained to be a medicine cat. He’s not the most spiritually connected to StarClan himself, which is usually left to Rabbitbloom and his apprentice, Dreampaw (Yumeno Himiko). Adderface would rather try to spend his time seeing ghosts walking among the living cats. He instead focuses on healing and studying of clan and foreign traditions and lore. However, he does tendency to explore and talk to outsiders, finding out about their traditions. That is if they don’t run away from him.