The Ten Stonehearts of Honkai: Star Rail: A Guide to the IPC’s Elite

In the galaxy-spanning narrative of Honkai: Star Rail, few entities possess as much influence—or command as much player curiosity—as the Interastral Peace Corporation (IPC). Within this massive organization, the Strategic Investment Department (SID) stands as the primary engine of expansion, led by the enigmatic "Diamond." At the forefront of this department are the "Ten Stonehearts," a group of elite executives who act as the firm's most powerful agents.

Understanding the Ten Stonehearts is essential for any Honkai: Star Rail player, whether you are interested in the deep lore of the Amber Lord Qlipoth or looking to optimize your Stellar Jade investments. These characters are not merely antagonists or allies; they are the primary architects of the game’s interstellar economy and political landscape.

Who Are the Ten Stonehearts?

The Ten Stonehearts are the highest-ranking executives within the IPC’s Strategic Investment Department. They serve as the direct subordinates of "Diamond," one of the most mysterious and powerful figures in the Honkai: Star Rail universe. While Diamond manages the vision, the Stonehearts are the ones who walk the worlds, negotiate with planetary governments, and occasionally enforce the IPC's will through overwhelming economic and military might.

The group is defined by their unique status as owners of "Cornerstones"—artifacts imbued with the power of the Preservation. These Cornerstones do more than signify rank; they are sources of immense supernatural power that allow these agents to exert control over the environment and those around them, effectively representing the IPC’s absolute authority in the cosmos.

The Hierarchy and "Diamond’s" Vision

To understand the IPC, one must understand that they operate under the gaze of the Aeon of Preservation, Qlipoth. The Strategic Investment Department is not just a business arm; it is a manifestation of the Preservation's will to build, protect, and expand.

• Diamond: The leader of the SID. Diamond is a visionary who rarely appears in public, delegating the heavy lifting to the Ten Stonehearts. His goal is the consolidation of power and the integration of worlds into the IPC’s fold.
• The Stonehearts: Each member is named after a precious stone and carries a title reflecting their specialized role. They operate with high autonomy, often given the freedom to pursue the IPC's goals using whatever means they deem necessary, provided the "investment" yields a return.

When you encounter a Stoneheart in a Trailblaze Mission, you are witnessing the "front lines" of the IPC’s expansionism. They are the ones who decide whether a planet is worth saving, exploiting, or abandoning.

Decoding the "Scales": Mechanics of IPC Decision-Making

A recurring theme in the lore surrounding the Ten Stonehearts is the concept of "the scales." In the context of their internal discourse, the scales represent the cold, calculated balance of risk and reward. When the group faces a crisis—such as the potential loss of an entire world or a threat to their operations—they do not operate on emotion.

This "scales" philosophy is why players find these characters so morally complex. They are not villains in the traditional, mustache-twirling sense. Instead, they are hyper-rational bureaucrats who view planets as assets and civilizations as variables in a long-term investment strategy. For the player, this means:

1. Strategic Flexibility: They will forge alliances with the Astral Express if it serves the IPC's bottom line.
2. Calculated Betrayal: They will discard allies the moment those alliances become liabilities.
3. Preservationist Logic: Everything they do is framed as a necessity for the "greater good" of the corporation’s survival, which they equate to the survival of civilization itself.

Strategic Implications: Why the Stonehearts Matter for Your Account

If you are a competitive player, the Ten Stonehearts are perhaps the most important units to track. Because they are central to the game's plot, HoYoverse consistently ensures that these characters receive top-tier design, unique mechanics, and powerful kits.

1. Future-Proofing

Characters linked to the Ten Stonehearts are rarely "filler." Because they represent the elite of the IPC, their kits are often designed to define or shift the meta. Whether it is Topaz & Numby redefining the Follow-Up Attack archetype or Aventurine setting a new bar for sustain units, these characters change how you play the game.

2. Narrative Significance

Pulling for a Stoneheart is, in many ways, pulling for the main story. Their involvement in a patch cycle guarantees high-stakes lore, deep dives into the history of the IPC, and major developments regarding the relationship between the Astral Express and the various factions of the galaxy.

3. Economic and Gameplay Synergies

The Stonehearts are often tied to specific gameplay niches (e.g., Follow-Up Attacks, Shielding, or Debuffs). By investing in these characters, you aren't just getting a strong unit; you are building the foundation for a team composition that the developers will likely support with future relics, light cones, and team members for months or years to come.

Common Mistakes When Dealing with IPC Characters

Many players make the mistake of viewing the Ten Stonehearts as strictly "bad guys" or "good guys." This binary thinking often leads to missing the nuance in their character arcs:

• Ignoring the Long Game: Some players assume that because a character acts with malice, they are an enemy for the entire game. In reality, the IPC’s goals often align with those of the Trailblazer. Always look at the objective, not the method.
• Misunderstanding their Authority: Players often underestimate the Stonehearts. If an agent like Aventurine or Topaz gives an order, it is backed by the full weight of the IPC’s military and economic power. Treating them as mere individuals rather than representatives of a galactic superpower is a recipe for tactical failure in the story.
• Underestimating the Cornerstones: Always pay attention to the lore surrounding their specific Cornerstone. These items are linked to the power of the Aeon of Preservation. If a Stoneheart is wielding the power of their Stone, they are operating at a level of power that transcends standard mortal combatants.

Conclusion: The Stonehearts as the Pillars of the Galaxy

The Ten Stonehearts are the ultimate representation of the Honkai: Star Rail world-building. They bridge the gap between individual character stories and the macro-political scale of the universe. By keeping a close watch on their actions, their internal hierarchy, and the shifting power dynamics of the IPC, you can gain a much deeper understanding of the threats and opportunities facing the Astral Express.

As you navigate the game, remember that in the world of Honkai: Star Rail, everything has a price. The Stonehearts are the ones who set that price—and they have the authority to collect. Whether you align with them or oppose them, their influence is unavoidable, making them the most significant characters to follow for any serious player.