A ninja monk and scholar reincarnated by Kabuto during the Fourth Shinobi World War. He was also the mentor of Chiriku.
Chukaku taught Chiruku long before his death and was eventually placed in a tomb at the cemetery in the Fire Temple. Later on Kabuto reincarnated him by accident while trying to look for Chiriku.
He is a short thin old man with a bald head, he has a long and thin grey beard. He wore a traditional garb of ninja monks.
Sealing Release Technique