Gummi Juice

Gummi Juice is an important mystical potion and plot device in Disney's animated fantasy series, the Gummi Bears - created by the titular Gummi Bears using the magical Gummi Berries this potion had amazing qualities that allowed the Gummi Bears to become super-fast, agile and "bouncy" - to the point the normally fragile bears could out-pace a small army of ogres.

The potion, if consumed by a human, would grant immense supernatural strength - for this reason the devious Duke was forever seeking a way to either steal the Gummi Juice for himself or find a means to force the Gummi Bears into making it, so he may use it to become an invincible conqueror.