Kazuma Kuwabara, more commonly known as Kuwabara is one of the main protagonists of Yu Yu Hakusho, along with Yusuke Urameshi, Kurama & Hiei. He is the younger brother of Shizuru Kuwabara. He also seeks to become Yukina's lover.
Kuwabara is Yusuke's rival who eventually becomes his close friend. He is slightly crass himself, but still easily the nicest of the four main characters. Kuwabara has a very powerful sixth sense, which he doesn't seem to enjoy, and is able to manifest his reiki (spirit energy) as a sword. It was revealed that Kuwabara is the only full-blooded human of the main four.
In spite of his delinquent appearance and bellicose attitude, Kuwabara has a warm, tender, sensitive and kind heart who has a strong sense of justice and loyalty for those around him. In fact, he is one of the people trying to give Yusuke and the rest of the group moral advice, and show the most concern for innocent bystanders and collateral damage. Furthermore, he's the most emphatic to the plights of others and will even save an enemy if he believes they are worth saving.
Powers & Abilites
Spirit Sword: Kuwabara can create a sword made out of his Spirit Energy.