Often described as suspicious and cruel, yet a hard-working administrator.

Is "kingjohn" perhaps a you're researching? Introduction to Feature-Based Solids Modeling

In software like SOLIDWORKS , you can control which specific bodies are affected by a feature. 👑 Historical "Feature" of King John

Features like fillets, chamfers, and holes modify existing solids.

Features are built from sketches or primitive shapes to create a solid body.