Who Sealed the 8 Tails in Killer Bee?
The Eight-Tails, also known as Gyūki, is one of the nine tailed beasts sealed within people. It was sealed within Killer Bee, a shinobi from Kumogakure.
Background
Killer Bee was chosen to be the jinchūriki of the Eight-Tails by the Fourth Raikage, A. He was selected because of his strong will and determination to protect his village. The Raikage believed that these qualities would make him an ideal host for the beast.
Sealing Process
The sealing process of the Eight-Tails into Killer Bee was done by Chōza Akimichi and Mabui. Chōza used his Multi-Size Technique to create a barrier around Killer Bee while Mabui used her Transfer Technique to transfer the Eight-Tails’ chakra into him. After this process was completed, Killer Bee became the jinchūriki of the Eight-Tails.