The Papas (and other ghost characters) as pinnipeds
Just go with me here. I love pinnipeds.
Full of hatred unfathomable, evil aura, has killed and will do so again, have actively harmed humans including some fatalities, also Primo would eat a penguin if given the oppurtunity
Big and intimidating but also just kind of silly sometimes. They have a silly mustache. Also did you know they can whistle. They can actually have softer vocalizations sometimes and that reminds me of how secondos singing voice is like. noticeably higher than you'd expect
Terzo: Subantarctic Fur Seal
They have a very smug aura. Also they sit very fancy like and the coloring fits with Terzo as well. Look at this goober. Also they used to be endangered species but they aren't any more. Maybe one day Terzo can make a comeback like that (he can't)
Copia: California Sea lion
Most of the funny sea lion gifs you see are this species. Just like Copia, they dance, they sing, they make silly noises. They're adorable. Also they're Californian. You'd think as a californian I would remember that Ghost lore apparently happens in my state but a majority of the time it just does not register for some reason.
Shy little black and white boys that hide from the camera much like V. They're pretty rare and solitary but also they look very cute and thats basically V as a whole
Phil/Special Ghoul: Baikal Seal
Big uncanny eyes. They look so goofy it kills me. If you told me they made Phil was forced to eat cement as a child I would believe you
Look up any video of their vocalizations and tell me that doesn't sound like an old ass man
Sister Imperator: This specific Steller Sea Lion that has been terrorizing San Fransisco for like the past month
It's not even the common species of the area. Why is it there. Anyway it has a powerful presence and thats very Sister coded.