Tet

Tet (テト) is the One True God of Disboard. He assumed the title after the eternal war which he won by default as he did not participate in it and the other Gods were all defeated. As a result he obtained the Star Cup. Tet does not belong to any of the 16 races. After both Shiro and Sora defeated him in a game of Internet chess, he summoned the siblings to Disboard, under the guise of saving Imanity. To challenge Tet, one must collect all pieces of different chess from 16 races, this means under the Ten Oaths, one must defeat or unite all 16 races. Tet resides in a king chess piece.

Appearance
Tet is seen wearing a beret with a brim and a yellow clover on top of it. He has a small red-colored heart below his right eye. His most distinctive features are his eyes, for they are multi-colored. Despite the fact of his eyes being multi-color, his right pupil has a diamond shape and his left a spade shape on it. He wears a large metal earring on his left ear which is shown to be a die, wears a blue choker and bracelets in both hands with the same color. He wears a red hoodie with a chartreuse shirt and typical blue shorts, accentuating the fact that he is only a boy. Tet appears to have all the symbols of a deck of cards on him (hearts, spades, diamonds and clubs). He is shown to wear a red sock on his right foot and a red piece of cloth wrapped around his left one.

Personality
From his introduction when he transported Shiro and Sora to his world, Tet has been shown to be bright and playful like any human boy of his apparent age. From the rules he set up on Disboard he appears to abhor violence and fighting, probably after seeing what the ancient war did to the world. This shows that he may be somewhat benevolent and peaceful. He also mentions that he usually only spectates, rarely interfering. He dislikes the other Old Deus and was shown to have very negative opinion of them. He also thinks of them as boring.

History
A long time ago, a boy named Riku who had a habit of playing chess on his own always imagined the existence of an 'ultimate gamer' sitting right across the chess board, constantly challenging him to another game with a smile.

During the climax of the Great War, when Riku successfully summoned the Star Cup, he considered himself unworthy of its power and instead prayed for somebody to appear and use the Star Cup to make the world a better place. In his last moments, Riku witnessed the 'ultimate gamer' of his imaginations come to life. The person who stood before him called himself Tet, the final and weakest Old Deus, born from Riku's wish and the overwhelming presence of incredible magic energy. Claiming the Star Cup and becoming the One True God, Tet immediately used his absolute power to repair the damage done to the planet and set forth the Ten Pledges, thus ending the Great War.

After the end of the Great War, as the Exceed races slowly learned to cope with their new lifestyles, Tet would constantly masquerade as a member of a particular race, infiltrate said race and have as much fun as he could. He also enjoys visiting other worlds and parallel dimensions to learn their games and strategies.

6000 years later, during one such trip, he came across a pair of siblings who were said to be unbeatable in any game. Intrigued, he challenged them to a game of online chess and, for the first time in his life, lost. Elated over finally meeting a worthy opponent, Tet transported them to the world of Disboard and presented them with the opportunity to challenge him for the throne of One True God.

Since then, Tet has been constantly monitoring Sora and Shiro with enthusiasm. Not long after Avant Heim joined the Elchean Federation, Tet decided to masquerade as an Imanitian and go play with Sora and Shiro, but ended up fainting on the streets because he hadn't eaten for three days. When Izuna encountered him and fed him some fish, Tet passionately challenged her to various games and recounted the story of Riku and Shuvi to her.

Abilities
As the One True God and former God of Play, Tet presumably has overwhelming knowledge in all types of games and is very observant to find out cheaters. His abilities are further implied as when Sora and Shiro beat him in a game of chess and they talked in public (light novel) the Imanity were shocked of how their new king beat the One True God in a game of chess. He can also change his appearance at will.

Strengths
As the One True God he can have many powers with the only known ones are teleportation and levitation(flying). It can also be considered that he has a vast amount of magic power, probably the highest one of all disboard. This can be thought as Jibril stated that even Old Deus would find it difficult to summon beings from other worlds but Tet is shown not to have any problems with it.

Weaknesses
Unknown at the moment

Character
To be added.

Quotes

 * (to his World) You creatures who have fought with strength, violence, blood and death, who built a tower of corpses that rises to the sky and call yourselves wise, tell me this: What is the difference between you and the dumb beasts? もし強さ、暴力、血と死と戦ったの生き物、 誰が、天に上昇し、自分が賢い呼ぶ死体の塔を建て 私にこれを言う：あなたとダム獣の違いは何ですか？ (Moshi tsuyo-sa, bōryoku, chi to shi to tatakatta no ikimono, Dare ga, ten ni jōshō shi, jibun ga kashikoi yobu shitai no tō o tate Watashi ni kore o iu: Anata to damu-jū no chigai wa nanidesu ka?)

From this piece of Heaven, I command that there will be no plundering or bloodshed. -First law stated by Tet (Volume 1 chapter 1 part 1)

Trivia

 * It can be considered that Tet was once an Imanity as his appearance is similar to one. However that cannot be proven as only one Old Deus has been shown. This speculation is further strenghen as in volume 1, Epilogue part 2, Sora says that Elchea was a city near Tet's home among other things. As a reply, Tet said :  "Ahahah........But please do not misunderstand. I am basically a spectator, never helping a particular race— but then, only this once, I let my personal feelings go wild." (Edit: In Volume 6, it is confirmed that Tet was an Old Deus before becoming the One True God.)
 * It is interesting to note that Tet's name is also the 9th letter of the Hebrew alphabet ("ט" in Hebrew). Although it cannot be confirmed at this point, Tet's name ("テト" in Japanese" could be a reference/abbreviation to "Tetragrammaton," ("テトラグラマトン" in Japanese) which would explain why he is the sole god in the series.

Images
Tet Tet