Lev Haiba.

Lev Haiba (Japanese: 灰羽はいば リエーフ, Haiba Riēfu) is a first-year student at Nekoma High. He was one of the middle blockers and the self-declared ace of the team.

Lev is very tall with exceptionally long arms and legs. He has neatly parted light gray hair and catlike slanted green eyes framed with thin eyebrows. His half-Russian heritage gives him tall height, exceptional limb length and physical ability. He is noted to be quite attractive by several Nekoma female students.

He is shown to be quite childish and cheerful, as displayed by unintentionally making fun of and pointing out Hinata and Yaku's height, along with the contrast they hold to him and other players. Lev's appearance, as well as his piercing eyes, causes people to believe he is much more intimate and serious than he actually is. Though he can be extremely blunt, often offending others without realizing, he never seems to mean any real harm and adopts a playful attitude towards most things.

He is also shown to be enthusiastic about spiking and blocks as he gets excited about it very easily and can be competitive with people he is interested in. He can be quite confident, nearing haughty, as displayed when looking down at Nohebi when he managed to smash down their receive.

Lev is a half-Japanese, half-Russian first-year. He was born and raised in Japan and consequently cannot speak Russian. He is first introduced in chapter 78 of the Haikyū!! manga and the first OVA episode, shown at Jump Festa 2014. He attends Nekoma High and is a middle blocker and self-proclaimed ace on the Nekoma High Boys' Volleyball Team.

Whip Spike: Lev's most notable ability yet is his whip-like spike due to his long limbs. Hinata, in particular, is amazed by this spike, telling Lev, "It's incredible, how your spikes made it seem like the blockers being there didn't even matter." Lev's height adds to the success of this spike as it gives him a higher point to hit from and can often go untouched by blockers. Broad Attack: Lev is proficient at doing a broad attack. Due to his huge strides, he would outpace his opponents and spike before a block could be put up. He is capable of pulling off a broad attack spontaneously with Kenma that is usually highly successful most although of the time Lev fails to properly signal to Kenma that he wants to attempt this attack.

Read Blocking: During the summer training camp, Lev starts improving his read blocking under Kuroo's supervision. He corrects his "banzai block" in which he places his arms too wide apart, thereby leaving a huge gap for a spike to go through. By the time Nekoma reaches the Tokyo qualifiers, Lev has already made much improvement but still has the habit of swinging his arms around when attempting to block. After he finally understood the importance of teamwork, Lev becomes more adept at limiting the path of the spike for the receivers. Combined with his advantageous height, Lev is a blocker that can exert immense pressure on the opposing setter, as seen when his presence is enough to cause both Kageyama and Sugawara to try to keep spikers clear of him during the match between Karasuno and Nekoma.

Morisuke Yaku: Lev and Yaku are opposites in physical traits. While Lev is a towering figure, Yaku is short, even if he doesn't like to admit it. Lev's bluntness leads him to directly point this fact out, much to Yaku's annoyance. He makes sure to reprimand Lev for it, often physically hitting him in his anger whenever he points out his height. Yaku is also seen to have been training Lev with his receives, although Lev ditched him one time and lied to his teammates to play with Kuroo, Bokuto, Akaashi, and Tsukishima, leaving Yaku enraged. Like the rest of Nekoma, Lev sees Yaku as a skilled libero and firmly believes that Yaku is capable of saving any ball. Kenma Kozume: In the Nekoma OVA, Kenma and Lev are seen to be working together to perfect the timing of Lev's whip spike attack. It is mentioned by Kenma that Lev's technique is almost nonexistent and that his attacks are sloppier than Hinata's, which caused Kenma to try different methods to try to sync up with the middle blocker. At first, it seems as though Kenma dislikes Lev, but this feeling eventually disappears as the two are able to attack properly later in the series. Lev is naturally respectful to his upperclassman and always apologizes to him when he gets carried away. Because Kenma is a timid person, when he is angry, Lev admits he finds Kenma more frightening than Yamamoto and Yaku. Yūki Shibayama: The two are not seen interacting much prior to the Spring Tournament qualifier tournament. During the tournament, Shibayama would try to comfort Lev when the middle blocker was upset about his performance after the match against Fukurōdani. During the game against Nohebi, Shibayama is the one to help Lev truly understand what teamwork really means. From that point, the two are seen interacting with one another more and Shibayama is seen taking the role of trying to help Lev continue to play as himself and not try to play like others

Shōyō Hinata: Lev first meets Hinata at the Fukurōdani Academy Group away-games, and the relationship between the two is both competitive and playful as the two have similar personalities and goal of being the next ace of their respective teams. Although Lev sometimes unintentionally angers Hinata about his height, Lev enjoys hanging out with him as the two can often be seen in each others company during the training camps. Lev does have a rivalry with Hinata as the Karasuno middle blocker is both faster and more skilled than him in volleyball and aims to surpass him. In general, however, the two seem to be pretty good friends, and the competition between them is rather a friendly rivalry