Yamato Endo and Chika Takiishi

Gender: Male
Age: 17
Height: 187 cm
Weight: 81 kg
Blood type: B
Birthday: November 30
Yamato Endo is a major antagonist in Wind Breaker and the main antagonist in the Roppo-Ichiza/GRAVEL arc. He left Furin along with Chika Takiishi.

Appearance:
Endo is a tall, muscular young man with short, messy, dark brown hair that reaches his ears, with teal streaks (in the anime it's completely navy blue), mint green eyes, and black flame tattoos (dark green in the anime) on his shoulders, as well as the infinity symbol on his neck. He wears a black tank top under a white plaid jacket, black pants held up by a black belt with a silver buckle, and black and white All-Star sneakers.

Later, during the Noroshi War story arc, he wears a dark gray yukata with a giant skeleton printed on the back, held in place by a black belt under his sleeveless shirt.

History:
Endo first appears after KEEL is defeated by Furin High School. He then states that Furin has weakened. Later, at the end of the Roppo-Ichiza arc, Endo makes his first full appearance. It is revealed that Endo went to oversee Shuhei Suzuri's progress in capturing Shizuka Narita. It is here that Endo becomes interested in Haruka Sakura.

Later, Takiishi and Endo declared war on Furin. Their objective, as stated in their declaration of war, was to raze the city Furin protects and restore Furin to its former glory. It is then revealed that their ultimate goal is to eliminate Hajime Umemiya.

Gender: Male
Age: 18
Height: 178 cm
Weight: 70 kg
Blood type: AB
Chika Takiishi is a major antagonist in the Noroshi War arc, along with Yamato Endo. He was the strongest fighter in Furin before joining Noroshi.

Appearance:
Takiishi is a tall, slender, yet muscular young man. He has long red hair with yellow tips, light brown eyes, and red eyebrows. His first appearance shows him wearing a leopard-print jacket, a black T-shirt with a horned skull, jeans, and sneakers. He wears a pearl necklace, a chain, and silver hoop earrings.

When Noroshi wages war against Bofurin, Takiishi appears, dressed in a sleeveless, high-collared black jacket, black pants, and black boots. This outfit reveals the tattoo on his left shoulder, which matches Yamato Endo's.

Personality:
Although Takiishi appears to be a calm and reserved person, he is actually a whirlwind of violence and fury, easily enraged by the slightest provocation. Withdrawn and capricious, he lives with cold indifference, driven by an insatiable ego and an unquenchable thirst for battle.

He usually has a dull expression, except when he's angry or in the heat of battle, at which point he displays great excitement or pain. When he gets angry or someone tries to stop him, he reacts violently, even attacking whoever is closest, Yamato Endo. Umemiya, on the other hand, is a special case, as he has found in him someone capable of both irritating and stopping him; therefore, Takiishi feels more pleasure and amusement in fighting Umemiya than simple anger or irritation.

As Endo followed Takiishi, he realized that by blurting out random thoughts while Takiishi listened, only Umemiya could make him happy and excited. Therefore, Endo started a war against Bofurin with the sole purpose of forcing Takiishi to fight Umemiya on Furin territory.