For Navi, the left cat, we call her Chunka Munk, Plasticat, and Ms. Infected Lips.
For Scorpi, the cat on the right, we call him Mr. Small, Spider Cat, and Crybaby.
Their names are Booker and Hollow
Booker's nicknames are Book, Bookbookbookbookbook, Stinky, and Baby because his meow is tiny and he's baby
Hollow's nicknames are Mister Man, Kermit (his meow sounds like Kermit swallowing a tennis ball), Holla at ya homeboy, Stinky, and Chocolate Boi because he turns chocolate brown in the sunlight.
They're both so stupid and I love them.