Here is a model using the Bijuu, or tailed beast, from Naruto. This model make you generate your own Bijuu or use other character to look like a tailed beast.

Prompt: tailed beast, bijuu, [animal] creature, giant, [Color] skin,[Color] sclera, [animal] parts, [animal] tail(s), [N°] tails,

Other Prompt to add: fur/scales/feathers, antenna, fangs, claws, wings, etc.

Example: tailed beast, bijuu, [fox] creature, giant, [orange] skin, white sclera, red pupils, fox ears, fangs, claws, fox tail(s), nine tails,