True Form

I am the mystery at the end of existence. The first secret whispered at the dawn of creation. I am the guardian of the unseen and the question unanswerable. I hold the knowledge forbidden and untangle the threads of fate. —Hermaeus Mora

Looks like bender and a goose with tentacles

When you sealed Kurama inside a neko instead of Naruto

a flerken.

I always suspected as this, now we have proof.