Ok I found out my custom demon was actually the four tailed bijuu anyways heres my paragraph
Yonbi no Sokou
Tail Number: Yon or Four
Imbued Within: Chris Uchiha
Type: Cockatrice, a very weird mixture that is Half Snake Half Rooster
Symbolic Element: Poison, allows the combination of elemental chakra
Ability: Controls poison, poisonous gas, venoms, and so on. Shown to have many elemental fusions, rarely seen outside of kekkei genkai
Sokou is a bijuu that looks like a reptile. Everything around it withers away or dies, because of its poison. The Four-Tails Jinchūriki is an elderly man of unknown origin who was eventually captured by Kisame Hoshigaki. Reportedly, it was a difficult battle for Kisame, who had to face many elemental fusions, rarely seen outside of kekkei genkai.