Whirlweasel appears as a humanoid weasel with long white hair that wears traditional Japanese robes as well a sandals. He can also be seen carrying a scythe in both his hands.
Yo-kai Watch 3
Whirlweasel can be found in the Mt. Wildwood Tunnel with the A rank watch. He can also be found inside tornadoes that occur randomly at BBQ, alternatively he can also be freed from the Crank-a-kai with a Souvenir Coin, Mystery Coin, Pink Coin, Ultra Pink Coin, Legend Coin, or Tornado Coin. He can also be found in the Pyramid of Clu as an enemy Yo-kai in the Blasters-T Mode and the forth floor of The Tower of Zenlightment.
Yo-kai Watch Busters 2
Whirlweasel can be found as an enemy in many dungeons or he can be freed from the Crank-a-kai with Wandering Coins, Ultra Coins, or Suspicious Coin.
Ignores Charms affecting target Yo-kai when attacking.
SPD greatly increases while standing on the center square.
"Whirlweasel" is a portmanteau of whirlwind and weasel
Whirlweasel is based on the youkai of the same name, the kamaitachi (Japanese: 鎌鼬,kamaitachi "sickle weasel"). The kamaitachi is a weasel youkai with bristling fur, a call similar to a dog's bark, and most importantly steel-hard, extremely sharp claws shaped like sickles. They inhabit the Japanese inland mountain ranges (most notably Yamanashi, Nagano and Niigata), riding the mountain winds with such speed they are invisible to the human eye. They attack humans by rushing at them, slashing them with such skill that they don't feel any pain until they look down and realize they are covered in blood. Another version of the story tells of a trio of kamaitachi working together: the first one knocks the victim down, the second one slashes them, and the third one applies a healing salve to numb the pain, all within a few instants.
In Japanese, this creature gives its name to the legendary "vacuum slash" phenomenon, and is theorized to be another of Toriyama Sekien's inventions, born from a corruption of kamae tachi ("swordsmanship stance").
In his debut episode subbed by Noroinohanako subs , Whirlweasel has been described as female on multiple occasions. It was even stated she has several children. Despite being described as female, Whirlweasel uses the masculine pronoun ore (Japanese: おれ, 俺,ore).
Whirlweasel's "random" nicknames in Yo-kai Watch 3 are Kathy, Riela, Katia, and Carrie.