Papa Windbag appears as a ruddy old man with a red nose and a long white beard, wearing a yellow striped robe and straw sandals. On top of his balding head there is an unfurled gilded fan with the word appare (天晴, meaning "splendid, magnificent") painted in red.
While unchanged in the anime, games and other media, the text on his fan is edited to say "I RULE" in the English manga.
Papa Windbag has a brazen, boastful personality and passes it on to whoever he Inspirits. He appears to adhere to a personal code of honor and refuses to lie about his achievements, instead drawing the line at exaggerating them to make them sound more impressive.
Papa Windbag causes the possessed person to brag about their personal achievements and skills in a boastful manner, even if they're average and mundane.
Papa Windbag appears in Nocturne Hospital, in Gates of Whimsy, and Tranquility apartments.
Befriended: "You're strong because I'm great! So we should obviously be friends!"
Loafing: "So bored..."
Receiving food (favourite): "Amazing!"
Receiving food (normal): "It was...OK."
Receiving food (disliked): "How COULD you?!"
Freed from Crank-a-kai:
Received from a trade: "Now that you have me on your side, you will finally achieve GREATNESS!"
Papa Windbag appears in EP033 where he Inspirits Bear, Eddie and Katie, making them boast about their mundane summer activities. Nate attempts to deal with him by summoning the Classic Yo-kai - Boyclops, Lady Longnek and Pallysol to counter his bragging in a competition. The contest quickly becomes increasingly ridiculous to the point where the Classic Yo-kai are clearly lying. Taking offense, Papa Windbag calls them out on it but becomes intimidated when they demand that he prove that they are lying. Papa Windbag concedes defeat, saying that he can only exaggerate but not lie.
Papa Windbag later appears in EP057, where Nate summons him to counteract the power of Cap'n Crash. While Cap'n Crash tries making Nate regret something, Papa Windbag makes Nate so self-congratulating that he spins it into a positive thing. However, when Cap'n Crash makes Nate choose a bad present, Nate becomes so regretful that even Papa Windbag's bragging powers become useless, causing Windbag to flee.
"Jigajii-san" is a pun on "self-congratulation" with "old man".
"Windbag" is a derogatory term for a pompous/self-centered person; synonymous for "braggart".