The fish mask named Phil, which translates the game dialogue to French, is in reference to Phillipe Poisson, also known as Phil Fish, who is the French-Canadian game developer known for the indie game Fez.
While the translation is mostly aesthetic, the mask does unlocks unique dialogue for the ending of the Bonus Chapter Highball;
“Salut, je suis Wiley Wiggins! Bienvenue a fantastic arcade!“
which translates to “Hello, I am Wily Wiggins! Welcome to Fantastic Arcade!“
Fantastic Arcade named Hotline Miami as