Vincent Valentine
One year after the final fight with Sephiroth, Vincent arrives in Kalm, which shortly comes under attack by the Deep Ground Soldiers, who are after the ProtoMateria in Vincents body to fullfill their plan. Once Rosso succeeded, Vincent slowly began to loose control as Chaos' destructive nature surfaces. Only with the aid of Shelke was he able to regain the ProtoMateria, returning back to normal. After receiving encouragement from his friends, Vincent was able to destroy Omega. In the end Vincent made his peace with Lucrecia, revealing that he and Chaos had seperated in the explosion caused by Omega's defeat.
Shelke
The 4th member of the Tsviets, wielding two energy EM sabers. She is known as "Shelke the Transparent", though her name means Orange in Urdu, a reference to her amber colored eyes. She is the younger sister of Shalua. Commonly seen alongside Azul, she helps him hunt down Vincent. She is the only member of the Tsviets who remains colorless. She has a special ability known as SND (Synaptic Net Drive) which allows her to recreate her residual image and dive into the network to negotiate with data on in the subconcious of sentient life forms. At first she is seen as emotionless, but as time passes she becomes linked with the personality data of Lucrecia Crescent, beginning to feel and say what Lucrecia feels.
Azul
Known as "Azul the Cerulean" his name means blue in Portuguese and Spanish and he is the final member of the Tsviets. He uses a large cannon as his weapon, perfect for his hulking form. He is one of the three Tsviets subjected to the Metamorphose experiment, able to transform into a behemoth like Arch Azul, and killing his fellow guinea pigs to test their worth to the Deepground. He also posses a special skill in which he can be revived from a fatal wound once per battle. He fought Vincent three times and was finally killed when Vincent impaled him with his own cannon. He smirked that Vincent was more of a beast than he was.
Lucrecia
One of the scientists who worked on the Jenova Project, she was the one who saved Vincent by exposing him to a stagnated form of the lifestream called G Substance, but as a side effect he became the host of Chaos, descending into a feral rage. To calm his madness she used an ancient materia created to control Chaos. Due to the Jenova project and the cells inside he she began to suffer from visions of the horror Sephiroth would create later, that, coupled with her digust of her actions and the changes in her body due to Jenova's cells, she tried to kill herself. But the cells inside of her wouldn't let her die so easily, so she hid away in an unknown cave, eventually incasing herself in a crystal of mako.
Reeve
Former Head of the Urban Development Department, he used Cait Sith as a way for him to spy on, and later aid, Cloud and his party. Along with Mayor Domino, he was one of the few Shin-Ra officials who had a genuine care for the people. After the downfall of Shin-Ra he founded the World Regenesis Organization (WRO), and organization devoted to the environmental reclamation of the planet after Meteor.
Rosso
The 3rd, and craziest, member of the Tsviets, she is known as dangerously Psychotic due to her involvment with the Deepground, taking great pleasure in inflicting pain. Known as "Rosso the Crimson" her name means red in Italian. She fights with Cloud during WRO's assult on Midgar before finally battling Vincent atop the ruins of the old Shinra building. Egomaniacal to the end, Rosso denied Vincent "The privilege of killing Rosso the Crimson" by collapsing the portion of the building she was on, sending her plummeting to her death.
Hojo
One of the scientists that worked on the Jenova Project, Hojo was the cause of Vincents suffering, starting with the bullet that almost took his life. Later Vincent seemingly killed him, but it is revealed he was barely able to return into his body to upload his mind into the World Network as a backup. However, due to Meteor, his concious mind was fragmented and it would take two years before Hojo's mind could be assimilated again upon the World Network's restoration. Deciding to finish what he had previously started, Hojo entered the body of the "in-stasis" Deep Ground SOLDIER commander Weiss. Controlling the body, he ordered the Deep Ground to abduct those without Geostigma to server as incubators for enough pure Spirit energy to enable to Weiss's body to absorb Omega, and also trick the planet in awakening it. However upon Hojo/Weiss's defeat, Nero appeared and merged into Weiss's body, defiling Hojo's host and forcing Hojo to leave with all traces of himself being eliminated.
Nero
The 2nd member of the Tsviets, he is known as "Nero the Sable", his name meaning black in Italian. His body is always covered in darkness, obscuring his figure. The darkness he controls draws everything into it, with only him being able to take them back out of it. It is later revealed that Vincent is the only person capable of entering and leaving Nero's darkness at will, as his own darkness is apparently greater. It is said the restraint like outfit he weas is to keep his power in check. Nero is the biological brother of Weiss, and the only successful experiment from the g-Substance injection during the fetal stage, his mother being sucked into the darkness upon his birth. He is the one who secretly lead the Deepground under Wiess's name after Weiss's state became unclear to the remaining Deepground Soldiers. When facing Vincent the second time he took Vincent into his darkness where he appeared as Arachnero, attacked to a spider-like machine. Once defeated he returned to his brother and was stabbed by Weiss under Hojo's control. after Hojo/Weiss was defeated he appeared and merged into Weiss, never wanted to part from him again an in conseguence destroyed Hojo and his control over Weiss.
Weiss
The 1st, and strongest, of the Tsviets, he is known as "Weiss the Immaculate", his name meaning white in German. He is the leader of the Deepground Soldiers, his power making them fear, and follow him, though they rarely see him directly. He has all the other Tsviets abilities, uncluding Shelke's SND, within himself. During the festival at Kalm, when the World Network was fully restored, allowing Hojo's fragmented mind to come together again. He then invaded Weiss's body when he was in SND to find the cure for the time released Virus the Restrictors had infected him with to control him. Hojo, through Weiss's body had Deep Ground Soldiers abduct those not suffering from Geostigma to serve as incubators for enough pure spirit energy for Weiss to absorb Omega. The Make-Influence gave him powers far beyond Vincent's, letting him easily defeat him. But Vincent was able to overcome this power by using Chaos's power. Once defeated Nero merged with Weiss, forcing Hojo out and into oblivion. Still in control, Weiss envoked Omega's power, later killed by Vincent in Chaos form.
Yuffie
After the final battle with Sephiroth, Yuffie leaves home and is "forced" to join WRO, in charge of espionage and intelligence gathering. She aids Vincent many times, her cheerful and hyper personality constrasting comically with Vincent's more serious demeaner.
Shalua
A female scientist and member of WRO, sporting a prosthetic left arm that also serves as her life-support system. She is also missing her left eye. Shalua is a "workaholic" who in actuality is searching for her little sister Shelke. Upon finding her she is heart broken of how little of hr sister was left and blamed herself. In order to repent she saved Shelke from Azul, costing her her own life. She is also the one who made Barret's gunarm.
Cait Sith
Cait Sith is controlled by Reeve, playing a big roll during the events of Dirge of Cerberus.
Other then Vincent, he is the only playable character in the game.
Cloud
Cloud appears briefly during the assult on Midgar by WRO, eventually clashing with Rosso the Crimson, and later offering support to Vincent during his final fight with Omega.
Tifa
Tifa appears briefly during the assult on Midgar by WRO, also appearing later to offer encouragement to Vincent during his final battle with Omega.
Barret
Not much is known about his time after the final battle with Sephiroth, his only appearences being in the assult of Midgar by WRO, where he drives an assult truck, and during the battle with Omega, also giving encouragement to Vincent.
