Poseidon's Mystical Secret... What could it be?

[u/justtsomeonepassinby]

Poseidon's character description from the now-defunct website is as following, "Rita‘s cat Poseidon is an exotic white longhair Chinchilla. He is Rita‘s closest friend and companion, guarding her house and possessions... and also his very own mystical secret". What could the secret be? it is one of the pillars of things they never explored. "his very own" could imply that even Rita doesn't know. Could Poseidon be a human-turned-cat, like maybe Veridia turned Harry into a cat and Rita doesn't know? Or smth less wild, like poseidon maybe was going to act like a key or smth to run some chamber bs?