The ability to reflect an attack with "Reflecting Rebound" allows you to transform your body into an object that can rebound the incoming attack back to the attacker. This defensive move effectively uses the attacker's force against them.

Instead of resisting an attack head-on, the Copy Jelly alters its structure to become incredibly elastic, absorbing the force of an impact and then bouncing back into shape with minimal harm. Bludgeoning attacks lose most of their momentum as they sink into the Jelly's malleable form, while slashing and piercing attacks struggle to find resistance. The, Copy Jelly can even use this technique to launch itself backward or spring away from danger, turning defense into a tactical repositioning move. However, rapid consecutive strikes may overwhelm the elasticity, reducing its effectiveness.

The Copy Jelly's amorphous nature grants it complete immunity to Water and Piercing attacks. As a semi-solid entity, additional water merely blends into its form, rendering water-based attacks ineffective. Similarly, stabbing or puncturing is futile, as its fluid-like body seamlessly reforms around any intrusion, negating damage entirely.