Kazuma

Kazuma, also known as Furido, was once part of the Twelve Guardian Ninja who was part in the half of the group who attempted a coup d'etat against one of the "Kings of the Fire country". He is also the father of Sora. In Episode 63 he, as Furido, told Sora that Asuma killed him. As Furido he is mostly seen eating potatoes.

Background
Kazuma was once part of the Twelve Guardian Ninja, and part of the attempted coup d'etat where he somehow managed to survive.

He later tried to persuade the Feudal Lord into killing of the Hokage as he saw that The Fire Country only needed one "King". However he was instead betrayed by Asuma Sarutobi, who told him that the Feudal Lord did not agree with him. After a long fight between Asuma and Kazuma, he died after a finishing attack by Asuma. Chiriku was the only one who knew about this, which was kept as a secret. He fought Kazuma as well, but lost in fight. During the Fire Temple Filler Arc, he is seen with a long pale scar going diagonally across his face. It can be assumed that he got this scar from the finishing strike of Asuma.

Fire Temple Filler Arc
However during the filler it is revealed that he has somehow survived and has gathered three followers in his cause of ridding the Fire Country of one of its "Kings".

Abilities
Kazuma´s special weapon, a multi-section where the top can be split in three parts with chain in between the joints, can destroy rocks and trees in an blink of an eye. It seems strong enough to block Asumas wind enhanced trench knifes. He is also seen wielding a tri-bladed death claw that he can infuse with wind chakra, strong enough to block Asuma's wind enhanced trench knifes.

Kazuma has also shown impressive knowledge of sealing jutsu, demonstrated from how easily he and his team passed through Fuen's giant seal and how effectively he kept Sora's demon chakra contained until he finally released it.

He can also revive the dead with some sort of Tensei, that, Asuma speculates, is combined with the earth element. It would seem that he is also able to use his earth element to camoflage himself in a forest environment.