Rainy Brother 2 appears in Chapters 7 and 8 of the Void Quest within the Midnight Channel on rainy days. When defeated, it may drop 2nd Boy's Talc. Selling one 2nd Boy's Talc at Daidara Metalworks will unlock the Typhoon Claw for Teddie in the shop, which has the highest Attack rating of weapons available for him at that point but with a slightly reduced Hit rate.
In Golden, Rainy Brother 2 appears in Chapters 6 through 9. Selling four 2nd Boy's Talcs will unlock the Typhoon Claw for sale. It may also drop Howlite, Milky Quartz or Bloodstone for trade at Shiroku Pub.
Persona Q: Shadow of the Labyrinth[]
Rainy Brother 2 appears in Stories 2 and 3 of the Evil Spirit Club. It attacks with medium Physical skills, and may reduce the party's hit/evasion with Masukunda. When defeated, it may drop Rainy Piece, Rainy Breath, and Rainy Core. Rainy Piece is used to create the Alloyed Plate for Kanji and the Higo-yumi for Yukari. Rainy Breath is used to create the Gehenna Claw for Teddie and the Wolf Tunic female armor. Rainy Core is used to create the Life Fob accessory.