Fafnir

Fafnir  (ファフニール Fafunīru) or  Takeshi Ooyama  (大山 猛  Ōyama Takeshi) is a male dragon and a supporting character. He is Takiya's roommate and friend.

Appearance
In his Human form, he appears as a long, straight haired man in butler attire. He has red eyes which can change color and size depending on his rage. He has a calm, collected demeanor which reflects his slightly gloomy face.

When he is in dragon form he appears as a towering dark dragon with 3-4 pairs of pure red eyes.

Personality
In the beginning of the series, Fafnir abhorred humans for everything they were. As the series goes by his heart warms up to a human with similar interests and takes on a sensei-student style friendship with Makoto Takiya. His hatred for humans turns into more of an indifference to them, and more of a pain to get to know them rather than just kill/ignore them.

Due to this, he became extremely addicted to video games and other Otaku interests since his life style of a cursed dragon can easily accommodate it. He is hardworking and diligent for his passions as seen with his multiple all-nighters to play games.

Powers
Curses

- He has the ability to curse and even wrote a book filled with real curses and tried to sell it at Comiket, sadly not a single copy was sold so its true worth never showed.

Relationships
His roommate and friend, Takiya is the human who introduced Fafnir to video games. Kobayashi was surprised when he accepted Fafnir as a roommate without question. Fafnir tags along with him to conventions and helps him set up, later on setting up his own stand (with no sale-success).
 * Makoto Takiya

Tohru - Tohru seems to be his friend and possibly a student. She often calls him early in the story to ask for his advice.

Kobayashi -

Quetzalcoatl -

Elma -

Kanna -

Trivia

 * He bears a resemblance to Sebastian Michaelis from Black Butler, due to his appearance and even his Japanese voice actor.
 * Tohru calls him Mr. Fafnir.
 * Fafnir is also the name of a dragon in Norse mythology, who is the son of the dwarf king Hreidmar.