Alias/Aka: The Second, Sakon of the West Gate
Classification: Human ninja, leaders of the Sound Four
Threat level: Tiger || Tiger+
Powers and abilities: Superhuman Physical Characteristics, Chakra Manipulation, skilled martial artists, able to walk on water, walls and ceilings, able to merge their bodies, the dormant brother is able to move freely inside of and protrude any part of his body parts from anywhere on his brother's body in order to attack and defend, they are able to merge and lay dormant in their brother in order to regenerate injuries or recover chakra, either brother are able to break their bodies down to a molecular level and enter an enemies flesh which will gradually corrode the inner bodily cells of those they have merged with, summoning, chakra barriers (with the help of the other Sound Four), the power of the Cursed Seal allows Sakon and Ukon to utilize the planet's natural energy and use it to power up their jutsu and physical stats.
Physical strength: At least building+ in base, city block+ in released form (Superior to Sasuke's released form) || Unknown, at least city block+
Attack potency/Destructive capacity: At least building+ in base, City block+ in released state (Easily defeated Sasuke while he was utilizing curse mark) || Town (noted to be the strongest member of the Sound Four by Orochimaru and Kabuto, which puts him above other 3). Can also bypass durability with their Kekkei Genkai.
Durability: At least building+, city block+ in released state || At least city block+, likely higher, Town with Rashomon. Are also capable of regenerating wounds by resting in one another's body
Speed: Hypersonic in base (Superior to Sasuke) || Hypersonic+ (Along with the rest of the Sound Four, he defeated Genma Shiranui and Raidō Namiashi whom are Tokubetsu Jōnin. Raidō is also a bodyguard to the Hokage and has survived a confrontation with Kakuzu. Although the Sound Four noted that they wouldn't have won without the second stage of their cursed seals)
Range: Melee range, tens of meters with throwing weapons and explosive tags.
Weaknesses: Sakon likes to prolong his fights by toying with his opponents and using unnecessarily powerful techniques due to his pride of being the strongest of the Sound Four while Ukon is more impatient and hasty than his brother, forcing Sakon to quickly end his battles. If Sakon is the one to lay dormant for healing, Ukon will have trouble as he is not used to being the lead body. While within another's body, they are vulnerable to whatever injuries befall upon the host.
Standard equipment: Kunai, shuriken, explosive tags.
Keys: Base / Curse Mark Level 1 || Curse Mark Level 2