Katsumi Hayashi (林カツミ, Hayashi Katsumi) was a Jōnin of Konohagure as well as one of Orochimaru's experiments, created artificially using the DNA of another Akatsuki member, Itachi Uchiha, and a kidnapped Konoha Jōnin named Kaiya Hayashi. Given life inside Orochimaru's laboratory, his creation was a result of a new ninjutsu, developed by Orochimaru, created with the purpose of artificially creating human beings from DNA samples. After successfully creating a living human being, Orochimaru erased the memories of his "mother" and left the both of them just outside Konoha's gates, soon to be discovered by scout shinobi. Unaware of his unconventional origins, Katsumi was trained normally in the way shinobi, attending the Academy and graduating at the age of 10 to later become part of Team Anko.