私の彼女は九尾狐です

• イ・スンギ演じるチャ・デウン
  • 幼いチャ・デウン役のヒョヌ

幼い頃に両親を亡くし、裕福な祖父と叔母に育てられた、未熟な俳優志望の青年。祖父が彼を厳しい寄宿学校に入れようとしたため、デウンは家出し、仏教寺院にたどり着く。そこで女性の声に導かれ、狐の絵に九本の尻尾を描く。そこで出会った少女は、自分がその絵に描かれていた九尾狐（ミホ）だと告げる。デウンは、ミホに食べられることを恐れ、彼女の好物である韓国産の牛肉などを買い与え、彼女が九尾狐であることを隠して機嫌を取ろうとする。二人が一緒に過ごす時間が増えるにつれ、デウンは伝説の恐ろしい姿とは違い、ミホが可愛らしく好奇心旺盛な少女であることに驚き、ミホに恋をする。

• シン・ミナ ク・ミホ/パク・ソンジュ/ギルダル役

伝説の九尾の狐（韓国神話では「九尾狐」）で、500年間絵の中に封印されていた。何世紀にもわたって人間になることを夢見てきたが、男の肝臓を食べる妖婦だという噂が広まり、結婚を申し込む男はいなくなった。超人的な力を持ち、驚異的な速さで走り、高くジャンプでき、遠くからでも匂いで人や物を識別できる。しかし、狐玉（生命エネルギー、すなわち「気」が宿っている）が鬼火でできているため、水が大の苦手。大雲が崖から転落して瀕死の状態になった時、彼女は彼に狐玉を与えて命を救った。

• ノ・ミンウがパク・ドンジュ役

A half-human, half-supernatural being who disguises himself as an ordinary veterinarian. His initial mission was to capture the gumiho and put her back into the painting, but upon seeing Mi-ho, he changes his mind as she is the spitting image of Gil-dal, a goblin he'd once loved centuries ago, who was betrayed by her human lover and died at Dong-joo's hand. Suspecting that Mi-ho is Gil-dal's reincarnation, he acts as her mentor, watching over her and supplying her with information about humans. He also constantly warns her that humans cannot be trusted. Dong-joo tells Mi-ho how she can become human, deliberately withholding the fact that Dae-woong will die in the process. He readies all the necessary identifications and papers under the name "Park Seon-joo," which Mi-ho would assume once the 100 days have passed and she's become fully human. He also started to have feelings for Mi-ho.

• Park Soo-jin as Eun Hye-in

Dae-woong's older classmate and love interest whom he calls "noona"; Dae-woong stopped liking Hye-in after spending some time with Mi-ho. When Mi-ho becomes Dae-woong's girlfriend, she becomes jealous, and attempts to throw a wrench into their relationship by investigating Mi-ho's true identity.

• Sung Dong-il as Ban Doo-hong

Stunt director and head of the action school that Dae-woong attends. He is also the widowed father of Ban Sun-nyeo. Doo-hong idolizes Hong Kong star Chow Yun-fat and tries to imitate him in his appearance and manner of speaking. He falls for Dae-woong's aunt Cha Min-sook.

• Yoon Yoo-sun as Cha Min-sook

Dae-woong's aunt. She was never married and is very obedient to her father. She's unable to express her feelings for Ban Doo-hong, causing her to often make a fool of herself in his presence.

• Byun Hee-bong as Cha Poong

Dae-woong's strict but loving grandfather. He's concerned that his spoiled and shallow grandson isn't making good choices in life. He becomes fond of Mi-ho upon meeting her, and sees that being with her has made Dae-woong more mature and responsible. He eventually accepts Dae-woong's dream of becoming an actor.

• Kim Ho-chang as Kim Byung-soo

Dae-woong's best friend and classmate in action school. He is supportive of Dae-woong, and secretly likes Sun-nyeo.

• Hyomin as Ban Sun-nyeo

Dae-woong's friend and the daughter of Ban Doo-hong. After she gets over her crush on Dae-woong, she finally realizes that Byung-soo likes her and reciprocates his love.

• Im Hyun-sik as Buddhist monk (ep 1, 8, 15)
• Lee Soo-geun as police officer (ep 4)
• Uee as art major in college (ep 5)^[6]
• パク・シネ役コ・ミニョ(ep 6) ^{[ 6 ]}
• イ・ホンギがジェレミー役（第16話）^{[ 6 ]}
• キム・ジヨンがサムシンの祖母役で出演（第15話、第16話）

出典：^{[ 7 ]}

出典：^{[ 7 ]}

出典：^{[ 7 ]}

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出典：^{[ 7 ]}