Monstrous Ewok Chieftains, fully grown to resemble a Grizzly in Ewok garb, with a slightly flattened face. Teeth bared in a perpetual snarl, voice a lions roar, slightly alternating in pitch. For every cheesy Ewok attack shot, film an extra shot of a Chief roaring out the order.
Though I guess that’s less repurposing and going to require additional costumes.