In the Rank 3 fight with Sonic Juice, the RPG Travis talks about hating is most likely Final Fantasy VII.

• The song before the fight is very similar Final Fantasy's "Prologue" theme, while the battle music seems to be a parody of Final Fantasy's battle music.
• The game is mentioned as being beloved by "everyone and their mom."
• Travis mentions he wouldn't play it even if they remade it.
• The style and layouts the menus match Final Fantasy.
• Ifrit, Bahamut, and Knights of the Round are all referenced in the Summons.