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 tails, nine tails