1st Manga Appearance:|
1st Anime Appearance:
Kuroneko can be considered Nightow's mascot. He first shows up in another manga by nightow (sorry, I forgot the name). In that story he is one of many talking animals that the main character encounters. In both the trigun manga and anime kuroneko is a random occurence. he shows up when a little humor can be added to the story. He shows up a lot in the anime, but in the manga he isn't around much.