The absence of personal ego in isekai power-scaling serves as either a leash or a blueprint. Comparing a YPS-2 physical combatant to a YPS-7 world-shaper is analytically meaningless in terms of combat, as their abilities operate on entirely different planes of existence. Instead, the real point of intersection is their shared zero-score in Ego, which reveals how the genre handles characters who lack traditional self-determination. For a Filolial Queen, a lack of ego is a biological and emotional tether. Her growth trajectory is a straight line of evolutionary improvement designed to serve the Shield Hero's needs. She evolves from a mindless creature to a reliable partner, but her identity remains a reflection of her bonds. In contrast, the lack of ego in a slime sovereign is a strategic masterstroke. By stripping away human pride and malice, the narrative transforms a protagonist into a highly efficient engine for nation-building. Where the bird is a loyal tool, the slime is the architect of the system itself. One utilizes a lack of self to find belonging within a group; the other utilizes it to absorb and organize an entire civilization into a corporate-style federation. This comparison exposes a fundamental divide in isekai logic: power can be used to cement one's place as a cherished subordinate or to replace the existing world order with a more efficient bureaucracy.