Jushirou Ukitake Enemies

Stark is the laziest and most powerful of the Espada. He represents the Loneliness aspect of Death.

The Fūrā is a massive entity of unknown origin that allied itself with Sōsuke Aizen when he joined with The Menos. The creature shares an unknown connection to The Gillians, however it is not known if it is actually a Hollow or something else entirely.

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.

Kaname Tousen is the former Captain if the 9th Protection Squad of Soul Society and the current vice-commander of Sousoke Aizen's Arrancar army. Tousen holds himself to a rigid code of justice. His blindness renders him immune to the effects of Aizen's zanpakuto.

Katen Kyōkotsu is the name of the manifested spirit which reside within Shunsui Kyōraku's Zanpakutō. Like Jūshirō Ukitake's Sōgyo no Kotowari, Katen Kyōkotsu has two manifested spirits, both of which are female.

Lilynette Gingerbuck is a female Arrancar. She's one of Coyote Stark's Fraccion, but also part of Stark's original form he created due to loneliness.

Wonderweiss is an Arrancar that has strength matching a Espada.

Metastacia was an experimental Hollow created by Sosuke Aizen when he was trying to perfect the process of Hollowfication. Metastacia is responsible for the murder of Kaien Shiba and his wife Miyako.

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.

Sougyo no Kotwari are the manifested twin spirits within Juushiro Ukitake's zanpakutou.

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.