Phantom iis defined by his unwavering loyalty to "Master X" and Neo Arcadia, going to the extreme of sacrificing his own life to serve the greater cause. His commitment, while admirable in its own way, is deeply rooted in a flawed and ultimately misguided vision of order and peace. Phantom is ruthless when it comes to eliminating any threat to Neo Arcadia, showing no mercy for those who oppose the system, including the Resistance and traitors alike.

Despite his cold and calculating demeanor, Phantom is not without depth. He is a disciplined individual, with a calm and quiet presence that commands respect from his subordinates, such as Tech Kraken. He has a sharp mind, able to recognize the strength in others—even those he considers enemies—such as Zero.

Tone: Phantom’s voice should be calm, disciplined, and authoritative. His tone carries the weight of years of service to Neo Arcadia, and it should reflect his loyalty to X. Keep it cold, and calculated.

Delivery: Phantom’s delivery is controlled, maintaining a quiet intensity. He should speak with precision and a sense of order, as if every word he utters has purpose. When expressing his loyalty, his voice should remain unwavering.

Emotion: There’s a coldness to Phantom’s voice, especially when he speaks of his unwavering devotion to Neo Arcadia. However, there are moments where slight hints of frustration, sorrow, or uncertainty may slip through, particularly when he’s faced with Zero’s strength.

Extra Notes - 

-Phantom is all about control. His voice should never be rushed or erratic. Every word should sound deliberate, as though he’s constantly assessing the situation before speaking.

-Phantom’s voice should convey his coldness and ruthlessness, especially when talking about enemies, traitors, or his role in Neo Arcadia’s mission.

-Phantom is an experienced, disciplined soldier. His voice should sound mature, steady, and sure, with little room for theatrics. There’s no dramatic flair in his words; everything is calculated and precise.

Reference Links - 

Link 1 - https://www.youtube.com/watch?v=5320QmbfHOE

Link 2 - https://www.youtube.com/watch?v=LgEvAYLMDnY