|Affiliation||Aizen's Arrancar Army|
|Base of Operations||Las Noches|
Yammy Llargo is a giant Arrancar with tan skin, a very muscular build and a ridge-lined cranium, brown eyes and black hair. He has long, bushy sideburns and a thin ponytail reaching his upper-back; aside from that, he is bald. He has orange eyebrows and red markings under his eyes. He wears the standard Espada uniform, with the only difference being that his jacket is always open.
Like all Arrancar, he has a large hole in his chest signifying his previous time as a Hollow. The remains of his Hollow mask is the jawbone (complete with 8 teeth), located on his chin. A tattoo of the number 10, signifying Yammy's rank, is on his left shoulder. However, in his released form, the number changes to 0.
Yammy is thugish and dim-witted. He is also sadistic, barbaric, and fight-loving. Yammy's status as the Cero Espada upon his release has made him extremely arrogant, referring to his opponents as "trash". He relies solely on brute strength to win battles, and due to his stupidity and short temper, he becomes more and more reckless when he cannot win a fight quickly.
At some point, Yammy was turned into an Arrancarand became a servant of Sosuke Aizen. Despite being the weakest Espada, he becomes the strongest--or so he thought--when he releases his Zanpakuto. Despite having the most reiatsu in this state, he is still considered weak due to his stupidity and lack of fighting skill.