(Was UNIVERSE §16.)
Standard creature — PRODUCTION RULE
Must work on a generic side-on combat stage: ground-based or self-supporting, readable in side view, human-scale to several times human size, reusable on ordinary combat surfaces, with no required ceiling/wall/flooded arena, bespoke camera or multi-floor dependency.
Animation budget should plausibly fit idle, locomotion, attack, hit, death and optionally one special action.
Elite / unusual
May be larger or mechanically stranger, but still works on standard stages.
Boss / apex
May justify bespoke environment and mechanics, interact with architecture, occupy unusual elevations, span structures, exploit Tower physics or require special staging.
Standard creatures adapt to the Tower visually. Bosses may adapt to it mechanically.