Cat #1

Actual name: Pippin

Nicknames: Pip. Pipper. Pipkin. Pip-pip. Senor Pip. The Pipmeister. Pippolous Pippleby. Hateful Face.

Cat #2

Actual name: Merry (Alias: Monty)

Nicknames: Merman. Merp. Monkey. Mon. Monarch of the Glen. Mermonman. Montague. Monster. Worried Face.