Make an Epic Gacha Villain

What can we use instead of modeling clay or fancy craft glue if we can't find them?

If you can't find clay or craft glue, use air-dry playdough or tightly crumpled paper wrapped with tape for a clay figure and use white school glue, a glue stick, or clear packing tape to attach paper cutout limbs during the 'Build the main body' and 'Attach or join limbs' steps.

My paper puppet's arms keep falling off and my clay figure cracks — how do we fix that?

Reinforce paper joints by overlapping tabs and using a dot of strong glue or tape where you 'attach or join limbs', and prevent clay cracks by smoothing joins with a bit of water, pressing firmly when 'pressing clay limbs onto the body', and letting the clay fully set on a flat surface.

How can we change the activity for different ages so it's fun but doable?

For younger kids simplify the 'Draw a simple front-view sketch' step by providing pre-drawn shapes and larger felt pieces for 'coloring materials', for elementary kids let them cut and glue the paper cutout body parts, and for tweens/teens challenge them to use armature wire for the 'clay figure', detailed color swatches, and a longer backstory and filmed dramatic scene.

What are creative ways to make the villain more epic or personal after finishing it?

Make interchangeable costume pieces or a small prop collection that snaps on during 'Create one small prop', add a battery tealight behind 'glowing eyes', build a cardboard diorama as a stage for your practiced scene, or invent a gacha spinner that randomly chooses a cloak, weapon, and signature move to expand play.