Attack of the Twin Demons

is the unique ability of Sakon and Ukon that allows them to unify some or all of one's body with the others body. Typically, Ukon is dormant in Sakon's body, with his head protruding from the back of Sakon's neck. When Sakon is in need of assistance, Ukon can bring out some of his body parts to aid Sakon in blocking or attacking. Examples of this are seen in the forms of Multiple Connecting Punches and Multiple Connecting Kicks, where Ukon's arms and legs emerge from those of Sakon to add force to his physical attacks.

If needed, Ukon can separate from Sakon's body so that the two can attack independently. While this can be an effective way of double teaming an opponent, Ukon is not used to being outside of or leading Sakon's body and is much weaker when he does so. Despite this, the separated brothers are capable of merging with the bodies of others through Parasite Demon Demolition Technique. Once they have done so, Sakon or Ukon can destroy the host's cells from the inside, slowly killing them. While within another's body, however, they are vulnerable to whatever injuries befall upon the host, in theory allowing the host to commit suicide to kill either of the brothers.