Mandatory review gate for any mesh or asset created or edited in Blender. Detects z-fighting, floating/detached parts, inverted or inconsistent normals, non-manifold/open geometry, degenerate faces, duplicate verts, n-gons, unapplied scale, UV problems, bad skin weights, material/texture errors, and renders multi-angle review sheets. Use before calling any modeling, export or delivery task done.

Character rigging in Blender 5.2 - Rigify metarig fit/generate, bone naming/roll/collections, DEF/MCH/control layers, IK/FK, robust skinning (heat + proxy fallback), weight-painting rules, correctives, engine game skeletons (Unity, Unreal, Roblox R15), rig validation and deformation stress tests. Use for armature, skinning or weights tasks.

Foundation for any Blender 5.2+ task an agent drives - running bpy via MCP (live) or headless CLI, context overrides, locale-safe node lookup, enum discovery, 5.x API changes, verification. Use first for any Blender, bpy, .blend or 3D-asset request; routes to the specialized blender-* skills.

Game environments in Blender 5.2 - terrain from noise or heightmaps (erosion, terraces, play areas, slope/height materials, 16-bit heightmaps + splat maps for UE/Unity), biome scatter by slope/height/mask with Poisson spacing, modular kit metrics and validation (grid, pivots, seams, texel density). Use for levels, landscapes, forests, modular buildings, dungeons.

Export from Blender 5.2 with verified presets - Roblox (FBX/glTF, cages, R15, SurfaceAppearance), Unity (FBX, Humanoid), Unreal (FBX skeletal, Nanite, UCX), Godot/web (GLB, meshopt/Draco, WebP), USD. Scale/axes, smoothing, tangents, leaf bones, clips, batch export, post-export verification. Use whenever an asset leaves Blender.

Facial rigs and shape keys in Blender 5.2 - ARKit 52 blendshapes, visemes for lip-sync, sculpting expressions, splitting symmetric shapes into Left/Right, mirroring, corrective and combination shapes, drivers and control rigs, bone+blendshape hybrids, export to engines (Unity, Unreal, Roblox dynamic heads, VRM/web). Use for faces, expressions, lip-sync, or any shape-key work.

Optimize Blender assets for real-time engines - triangle/material/texture/bone budgets per platform (mobile, Roblox, web, VR, console, PC), LOD chains, decimation modes, mesh cleanup, draw-call reduction (material merging, atlases, trim sheets), instancing, vertex-split costs, collision proxies, texture memory. Use when an asset is too heavy, before export, or when targeting a platform budget.

Hair and fur in Blender 5.2 - hair curves on a surface, guides + interpolated children with the bundled hair node assets (clump, curl, noise, droop), density masks, Principled Hair BSDF (melanin), Curves Sculpt combing, 5.2 node Hair Dynamics, game hair cards with a rendered strand atlas, Alembic/USD groom export. Use for hair, fur, beards, eyebrows, grass tufts.

Lighting, cameras and look-dev in Blender 5.2 - studio 3-point and product lighting, HDRI environments, sun/sky exteriors, interiors, light linking, physically based light units, camera focal lengths/composition/DOF, cyclorama backdrops, looping turntables for asset presentation. Use when presenting assets, setting up scenes for rendering, or judging materials under consistent light.

Physically based materials in Blender 5.2 - metal/roughness rules, Principled BSDF inputs, color spaces (sRGB vs Non-Color), measured albedo/F0 values, texture-set auto-wiring, ORM channel packing, DirectX vs OpenGL normals, alpha modes, displacement, view transforms (AgX, Khronos PBR Neutral), engine-ready material rules. Use when creating, fixing, or exporting materials and textures.

Render with Blender 5.2 Cycles/EEVEE/Workbench - quality presets, GPU setup, adaptive sampling, denoising, light paths, color management (AgX, Khronos PBR Neutral, ACES), PNG/EXR/MP4 output, passes, the 5.0 compositor API, CLI and multi-camera batch rendering. Use for any still, animation or turntable render.

Retopology and UVs in Blender 5.2 - auto retopo (Quadriflow, Decimate, planar), deformation edge flow, seams, unwrap (Angle Based, Minimum Stretch, Smart), pixel-margin packing, texel density measure/set, lightmap UV2, UDIMs, mirrored UVs. Use to turn sculpts/scans/AI meshes into game meshes or prep UVs for texturing/baking.

Set up and audit Blender scenes the way studios do - units and real-world scale, collection layout, naming conventions (SM_/SK_/T_/M_), origins, linking vs appending, library overrides, asset libraries and catalogs, collection exporters, orphan/path cleanup. Use when starting a project, organizing a .blend, or before handoff/export.

Bake texture maps in Blender 5.2 Cycles - high-to-low normal maps with cage/extrusion, AO, curvature, ID, thickness, base color/roughness/metallic from procedurals, ORM packing, OpenGL vs DirectX, margins, GPU baking, fixing skewing/waviness/seams. Use when transferring sculpt or high-poly detail to game meshes or converting procedural materials to textures.

Time of day and atmosphere in Blender 5.2 - measured sky + sun for dawn, morning, noon, golden hour, sunset, blue hour, overcast, night/moonlight with stars and city glow, exposure balance, height fog from visibility, god rays, Cycles vs EEVEE volumes, compositor grade, stylized moods (cyberpunk neon, horror, underwater, desert). Use for any day/night, sunset, foggy or mood lighting scene.

Video in Blender 5.2 - Video Sequencer edits from Python (clips, image sequences, crossfades, titles, music fades, proxies, color management, H.264/AAC output) and motion tracking (feature detection, camera solve, scene orientation, tripod and plane tracking, stabilization) for VFX shots. Use to cut renders/footage together or match-move a camera.