Gillian (Menos Grande)
Foot-Soldier Class · Towering Hive-Mind
The lowest tier of Menos Class Hollows, formed when hundreds of ordinary Hollows cannibalize each other into a singular, colossal entity. Characterized by identical black-robed bodies, pointed masks, and slow movement. They possess minimal individuality and fire unrefined Cero energy blasts from their mouths.
Adjuchas
Command Class · Bestial Predators
Formed when a dominant soul within a Gillian hive asserts total control and continues devouring other Hollows. Significantly smaller, faster, and far more intelligent than Gillians, taking on distinct bestial shapes. Must constantly feed on other Hollows to prevent regressing permanently back into a mindless Gillian.
Vasto Lorde
Apex Class · Humanoid Gods of Hueco Mundo
The rarest and most powerful tier of Hollow evolution, numbering fewer than a handful in all of Hueco Mundo. Humanoid in scale, possessing combat capacity and spiritual pressure that exceeds average Gotei 13 Captains. They represent the absolute peak of natural Hollow evolution.