Takeshi, usually known by the nickname Gian (Jaian?) (Giant), is big, strong, and quick-tempered. His nickname might mean giant. He usually wears an orange shirt. He is known for his confidence in his terrible singing and cooking.

He regularly subjects the neighbourhood children to horrendous singing recitals, which is sometimes combined with his homemade dinner. Many of the stories revolve around Nobita and his friends’ efforts to avoid Gian’s concerts.

He also frequently steals other children’s toys and books under the pretext of “borrowing” it, unless the toy is damaged. However, he still has a strong sense of justice, and will not hesitate to help Nobita and his friends when they are in real trouble, which often occurs in the movies. Although he bullies the other children (mostly Nobita), he is terrified of his mother.

He founded his own baseball team named after himself. Even though Nobita is often blamed for the loss against the baseball team’s rival, the “Tyranos”, Gian and Suneo still force Nobita to play because they do not have enough players.

Gian has a younger sister named Jaiko, whom he adores.

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