|Fighting Style||Mouth's Style|
Tetrahedron (四面体, Tetora) is a special fighting technique. This technique can be only use by a team of the three persons.
At the first, the team corners the opponent to a wall, and then one of them have to jump to higher ground with the help of other two. At next, two of them must corner the opponent and prevent him from escape. They literally locks their opponent in a tetrahedron, then they starts to attack the opponent.
The Mouth used this technique to fight Jun Guevaru, but Jun easily defeated one of them with a punch, nearly broking all of his teeth. The other one started to run away and peeing on himself, and the last one was too scared to attack.