Tensaiga

The Tensaiga was sword left to Sesshoumaru by his father, and was forged from Sesshoumaur's father's fang like its brother sword, the Tetsusaiga. The Tensaiga is not a sword used for battle though; Its only good for bringing back things from the dead.

Tetsusaiga

The Tetsasaiga was the sword left to Inuyasha by his father. It's very poweful and can kill 100 demons at one time and is capable of several kind of attacks. The Tensusaiga is also what protects Inuyasha from transforming into a full-demon.

Thunderbrothers

The two Thunder brothers, Hiten and Manten, are the ones responsible for killing Shippou's father.

Tokijin

Because Sesshoumaru wanted a powerful sword like the Tetsusaiga, he had Tokijin forged from Goshinki's fang by the evil sword maker Kijinbo. The sword is very powerful and has such a strong demonic aura that it distroyed its maker.

Totosai

Totosai is the sword maker that made the Tensaiga and the Tetsusaiga. Totosai often shows up riding a cow when he's needed. He's a old man, and sometimes Inuyasha and the others get annoyed with him. He likes to tell Inuyasha that he doesn't use Tetsusaiga right and only swings it around like a maniac. Totosai spits fire to fight enemies.

Tsubaki

Tsubaki, the Dark Priestess, once trained under the same master as Kikyou long ago. Tsubaki became very jealous of Kikyou when her master picked Kikyou to be the gaurdian of the Shikon jewel instead of her. After that she became obsessed with remaining youthful and beautiful and getting revenge on Kikyou.