YU-GI-OH!
DUKE DEVLIN/RYUJI OTOGI

You don't stand a chance against me.

After the Pegasus arc, Otogi enters the same school as Yugi and his friends. He's arrogant and loud, and often brags about his skill as a duelist. When Jounouchi duels him to shut him up, Otogi defeats him and forces Jounouchi to dress up as a puppy. From the very beginning, it is clear that Otogi has skill as a duelist.

Otogi is also the brains behind Dungeon Dice Monsters. He developed the game with the help of his idol -- Pegasus. He's the best duelist at Dungeon Dice Monsters in the world until Yugi defeats him. After that, Otogi changes. He realizes that there's more to life than being the very best, and slowly becomes friends with Yugi and his friends.

In the same way that Yugi is Jounouchi's best friend, Otogi becomes Honda's best friend. As the series progresses, they spend more and more time together and their friendship grows. Otogi and Honda are also rivals competing over Shizuka's heart.