Spoke is a core figure belonging to Team Spoke and independent factions. Contrary to his appearance, he is very cunning and has a multi-dimensional personality that stops at nothing to achieve his goals. He maintains friendly relations with Mapick and occasionally Parrot, while fiercely opposing Zamotopee, LeetuceKey, ClownPierce, and others. Boasting top-tier strength on the server, he possesses excellent intelligence and political ability. He is the ruler of the End, seized the powerful army 'The Null' from Zamotopee, and can use Wither Cannons. He calls himself the King of the server.

Parrot was the King of Unstable SMP but had his throne taken by Sapharata. He is one of the core protagonists of the server, belonging to Team Parrot and the Liberty faction. He overcomes numerous adversities and hardships through his idealistic yet clever nature. He maintains friendly relations with Leo, MinuteTech, Jumperho, etc., and is in constant conflict with Ashswag, LeetuceKey, PrinceZam, and others. He possesses top-tier influence and military power, leading prison break narratives and confrontations with giant factions.

Wemmbu belongs to Team Wemmbu and independent factions. He is a main protagonist who roams the server based on powerful military force and innate competitiveness. He maintains a deep friendly relationship with his best friend Eggchan and will do anything for him. He repeats cycles of alliance and betrayal with figures like FlameFrags and Jadenman. He is a top-tier player with some of the strongest combat power and military force on the server. Additionally, he can use the Orbital Cannon.

FlameFrags has the vibe of a lone wanderer and is currently in a friendly relationship with Sapharata. Initially a ruthless villain who terrified the server, he grew into a protagonist after experiencing repeated betrayals and tragic events. He maintains a friendly relationship with his reliable supporter RoMedie and is hostile toward Wemmbu and ClownPierce. He possesses overwhelming combat sense and top-tier PvP skills. His nickname is the Immortal Demon.

LeetuceKey was the leader of the 'The Law' faction. Initially shouting for the realization of justice, he was a core villain who cornered the protagonists through elaborate political maneuvers such as kidnapping and blackmail. He was friendly with his former right-hand man DeputyAce, but is currently hostile toward Parrot, Spoke, and Wemmbu. He possesses high-level strength with meticulous conspiracies and organized control.

ClownPierce is the figure who rules the Nether faction. He is an absolute evil-type villain who shows uncompromising cruelty, using any means necessary solely for power and interests. He is friendly only with allies of the Nether camp and is hostile toward almost all survivors on the server. As one of the strongest martial powers on the server, he provides top-tier strength and terror.

Sapharata is the leader of 'Cindercrest', the current King, and a faction leader. He stood at the center of late-game conflicts by tenaciously and ruthlessly expanding his influence. He is friendly with the Cindercrest faction and won a full-scale war against the opposing Parrot Alliance. He is a high-level figure with powerful military strength and territory expansion capabilities.

Leo belongs to Team Parrot. As Parrot's reliable yet aggressive right-hand man, he plays the role of an enforcer in every major conflict. He maintains an absolute friendly relationship with Parrot and is hostile toward opposing forces, including Shubilly. He exerts high-level strength with an aggressive and bold combat style.

Eggchan is a major supporting character belonging to Team Wemmbu. As Wemmbu's best friend, he is a scene-stealer who adds cheerfulness and a unique narrative to the heavy atmosphere of the server. He maintains a strong friendly relationship with Wemmbu and opposes Wemmbu's enemies. He possesses a medium level of strength.

Zamotopee, who possessed the server's strongest military power and influence during his prime, was the leader of the strongest faction, 'The Null'. He exercised overwhelming dominance by mastering all knowledge of the server, but after being betrayed by Spoke, whom he trusted, he was pushed out of the center of power and is currently in a state of fatal crisis and isolation.