Mr. Pickles

He's only been shown once, very briefly, during the first livestream. His origins are unknown, as is where he currently is. It's been said he's escaped the confines of the house, but nothing has been proved. Who is this cat? What does he want? Will we ever know? 

Let him serenade you with his harmony: suno.com/song/4e07359b-2d88-414a-98f0-3b1d90996bab