Toshiro Hitsugaya Enemies

A doll belonging to Go Koga.

Gin Ichimaru is the former captain of the 3rd Protection Squad in Soul Society and one of the three traitor captains who currently lead the Arrancar of Hueco Mundo. A child prodigy whose sociopathic tendencies grew as he matured, Gin is fiercely loyal to Sosuke Aizen.

A Bount that serves Jin Kariya.

The manifested spirit in Toshiro Hitsugaya's zanpakutou

Luppi used to be the sixth strongest Arrancar in Aizen Sōsuke's Espada, before being killed by Grimmjow.

Wonderweiss is an Arrancar that has strength matching a Espada.

Muramasa is the manifested spirit of a renegade Shinigami named Kouga's Zanpakutō. Muramasa has tapeworm-like abilities that allows him to control other Zanpakutō, Muramasa has since been forcibly cut off from Kouga and is being overtaken by a Hollow he recently forced to become a temporary host.

Shawlong Kūfang, the Undécimo (11th) Arrancar, was the leader of Grimmjow's five Fracción and was also believed to be the oldest living Números.

Sosuke Aizen is a former captain of the Gotei 13, After betraying the soul society, He became supreme lord in Hueco Mundo. He led a huge war against his former allies in hopes of getting the Oken (Kings Key) and destroying Soul Society, but was eventually recaptured and is imprisoned.

Tier Halibel is the ruler of Hueco Mundo after Aizen's defeat, and she was the Tercera Espada, the third most powerful Arrancar, of the Espada.

Yammy used to be the 10th strongest Espada in Aizen's army but it is revealed that he was actually number Zero.