The Ragtime Mouse is a special encounter that can be found in the forests of the game's world, where he'll ask you trivia questions that you have to figure out if they're true or false. You'll know you found the Ragtime Mouse by the normal battle music being replaced with something different; it's the same music used for the Friendly Monsters. To answer the Ragtime Mouse, you attack either the X (False) or O (True) to the sides of him in battle. If you happen to attack him or answer wrong, he will flee and you won't get the same question again, thus it's possible to miss the Beating the Ragtime Blues trophy/achievement. He will also run away if you don't answer within 20 seconds.
Important: Using the booster that disables random encounters will also make it so you can't encounter the Ragtime Mouse.
There's a total of 16 different questions he can ask you, but only the first 15 are completely random. After answering those and getting to the last question, it will always be the same. You will receive money from the Ragtime Mouse for getting each one right, but find him one last time after the final question, and he will hand over a Protect Ring; you will also receive the EXP and Gil from the Ragtime Mouse at this time. It should be noted that, depending on story progression, you can only encounter the Ragtime Mouse so many times. On the first disc, you can encounter him a total of four times. On disc two (after reaching the Outer Continent), that increases by another six times (10 times total) and once you have the Hilda Garde III, you can finish off this side quest for good.
Ragtime Mouse's Questions
|The 15th Lindblum War started in 1600.||False|
|"I Want To Be Your Canary" was written by Lord Afon.||False|
|Theater Ship Prima Vista was built in Artania Shipyards.||False|
|Chocobo's Forest is located between Lindblum and South Gate.||True|
|Some Mus are friendly and don't attack.||True|
|Berkmea Cable Cars have been running for 8 years.||True|
|Lindblum's air cabs operate around the clock.||True|
|Lindblum Castle is larger than Alexandria Castle.||True|
|Theater Ship Prima Vista uses Mist as its source of energy.||True|
|Fossil Roo is a tunnel that connects Treno and Alexandria.||False|
|Prima Vista means love at first sight.||False|
|The Bobo bird is a bird that brings you fortune.||False|
|Only one desert exists in the entire world.||False|
|Treno's cafe, Card Carta, is members only.||True|
|Conde Petie is a village of Goblins.||False|
|You can defeat Ragtimer.||True|