Tetsuo Takeda (manga)

Tetsuo Takeda (武田鉄男, Takeda Tetsuo) is one of the main supporting characters in Yu-Gi-Oh! ZEXAL. He is one of Yuma Tsukumo's friends and is a Duelist.

Biography
Tetsuo is part of Yuma's circle of friends, together with Kotori, Cathy and Takashi. At school, when Yuma keeps challenging himself with impossible tasks with his "Kattobingu" spirit, while Tetsuo usually makes fun of him, Kotori is always worried. Yuma uses to Duel Tetsuo very often; however, he apparently was never able to beat Tetsuo.

One day, Kotori and Yuma find Tetsuo has been forced to Duel by a guy nicknamed Shark, and after being defeated, he takes Tetsuo's Deck. Yuma confronts him, but Shark takes his pendant and breaks it. Enraged, Yuma challenges him to a Duel. Shark accepts it, and says that they will Duel on Sunday, in the train station.

Later, Yuma keeps searching for the other half of his broken pendant until late, and Kotori stays with him all the time. Tetsuo then appears and tells Yuma not to go, as he would never be able to win, and that it was a problem of his. But Yuma declines, saying that that's already a problem of his as well, as Shark broke his most important thing. Tetsuo then gives Yuma the other half of the pendant, saying that he found it accidentally. However, it can be clearly seen that Tetsuo was searching for it as well, judging by its hands. Sunday, when Yuma goes to Duel Shark, Kotori and Tetsuo go to watch the Duel and cheer Yuma up. During the Duel, as Astral appears to Yuma, Kotori gets worried about him talking "to himself". Yuma then asks if she and Tetsuo can't see Astral, and they say they can't. Later, when Yuma defeats Shark, Kotori and Tetsuo then congrats him in joy.

After Yuma's loss to Kaito Tenjo, Tetsuo, Takashi, Cathy, Kotori and Tokunosuke form the Numbers Club in order to help Yuma.

Later, The Numbers Club, together with Yuma and Astral, go to the Heartland Theme Park to find "Numbers".

After their escape from the park, Yuma and the members of the Numbers Club gather in Cathy's house. Tetsuo asks Cathy what she wanted to show them. She then presses a cat paw-like button, which opens a door leading to a big room, with many researchers and big computers. Cathy explains that as an apology for the trouble she caused, the Numbers Club's headquarters would be established there, where they can look up mysterious phenomenons happening throughout the world, and therefore, locate the "Numbers".

Yuma tells them that Astral told him that now he got three "Numbers", some of his memories have returned. Yuma asked what he remember, and Astral says his enemy is Dr. Faker, who plans on using the hidden powers of the "Numbers" to destroy the Astral World; However, it is linked to this world. So, if the Astral World dies, this one will die as well. The Numbers Club then decides to save the world from Dr. Faker.

Another day, the Numbers Club is gathered at Cathy's mansion, when a big monitor detects a huge source of energy coming from a Duel involving a "Numbers". Tetsuo rushes over there, and finds a Numbers Hunter. Meanwhile, Kotori calls Yuma, who is sleeping at home, and tells him about Tetsuo. They go immediately after him, but when they arrive there, they find Tetsuo laying on the ground, injured. Tetsuo gives his Deck to Yuma in order to help him improving his Deck. Yuma uses Tetsuo's cards and do so. Right then, Tetsuo is hospitalized.