Bankotsu

Bankotsu (蛮骨, Ban Hone) is the leader of the Band of Seven. Both the youngest and strongest member of the group, he carries the huge Banryu halberd. Bankotsu is a skilled mercenary and has killed many people; he retains a sense of honor and compassion, but only for his six companions.

After his resurrection, Bankotsu uses Banryu to kill everyone in the surrounding area. The scent of blood draws InuYasha's group to engage in battle until Naraku summons the Band of Seven back to him. During the fight, Banryu is damaged by InuYasha's "Wind Scar" attack, but it gains the ability to deflect that attack after Bankotsu repairs it with the jewel shards Renkotsu stole from Kagome. After learning that Renkotsu murdered Jakotsu, Bankotsu kills Renkotsu for his betrayal. With seven fragments in his body and two in his halberd, Bankotsu heads off to destroy InuYasha.

In the manga, InuYasha gradually cuts the Shikon shards out of Bankotsu's body as the battle progresses until Bankotsu is cut in two, with Naraku stripping the remaining half of its Shikon shard. In the anime, Bankotsu slays 1,000 yōkai and kills 1,000 warlords with Banryu, transforming it into a demonic weapon that projects its wielder's hatred as powerful demonic energy. However, this proves to be his downfall as InuYasha reflects this attack with the Backlash Wave, crushing Bankotsu and shattering Banryū.

Name Meaning
Banko and tsu means "Barbarian" and "Bone" adding them up as "barbarian bone".

Weapon
Banryu: Nicknamed his "partner" Banryu is a demon sword that can manipulate lightning. In the series of episodes that includes the Band of Seven Bankotsu uses jewel shard fragmens from his dead comrades an two that one of his comrades (Renkotsu) took from Kagome to strength his own power and that of his Banryu. The strengthen Banryu is able to deflect Inuyasha's wind scar. The strength of Banryu is equal to the power of Tessaiga. Bankotsu, knowing the strength, used it to destroy the warlords, and demons. However, Banryu, in turn, forge into a powerful, demonic sword that could project the master's hatred to a powerful energy. Therefore, Inuyasha's backlash wave, later on, reflect Banryu's demonic attack, destroying Bankotsu, and shattering Banryu.

Abilities
Bankotsu's most well known ability is being able to weild Banryu skillfully. Aside from that, he also seem to posses superhuman strength, endurance, speed and agility.