Suguru Daishō captains the Nohebi Academy Boys' Volleyball Team in his third year. His thin face, short eyebrows, and slanted eyes create a distinct snake-like appearance. He sports thick, dark hair swept to the left, later cutting it significantly shorter post-timeskip. Standing 178 cm (5'10"), he possesses a smaller build compared to other prominent volleyball captains. Competitive and manipulative, Daishō masters psychological warfare on the court. He cultivates a polite façade to sway referees, loudly admitting net touches or apologizing for accidental plays, while simultaneously employing underhanded techniques. His tactics include spiking balls at opponents' faces and strategically blocking line judges' views to influence calls. He specifically targets weaker players to shatter morale and induce self-destructive play. Despite this calculated approach, he reveals emotional vulnerability when mocked, especially concerning his breakup with girlfriend Mika Yamata. His gameplay blends these manipulative strategies with genuine skill, featuring sharp feints and keen analytical court awareness. During the Spring High Preliminary Arc, Daishō instigates confrontations with Nekoma, exposing a deep-seated rivalry with captain Kuroo Tetsurō. In their decisive match, he directs aggressive plays and taunts at Nekoma members Yamamoto and Lev, exploiting Yamamoto's temper to bait errors. He also targets substitute libero Shibayama after Nekoma's primary defender, Yaku, sustains an injury. Despite Nohebi's psychological tactics, Nekoma wins. Post-match, Mika reconciles with Daishō, acknowledging his dedication to volleyball and expressing renewed interest in his passion. Daishō joins his tearful third-year teammates in an emotional moment. Later, during the Tokyo Nationals Arc, Daishō and Mika attend matches as spectators. He analytically observes games like Karasuno vs. Inarizaki, explaining technical rules and strategic rotations to Mika. He witnesses Nekoma's matches against Sarukawa Tech and Karasuno, noting deviations from Nekoma's typical data-gathering style and expressing annoyance at their defensive strength. Watching Fukurōdani vs. Mujinazaka, he openly roots against Nekoma's ally team. A New Year's date at Sensō-ji temple with Mika reveals his discomfort after accidentally offending her by complimenting Nekoma player Alisa Haiba and his attempts to defuse the tension. Following high school, Daishō pursues professional volleyball, joining the Division 2 V.League team Yotsuya Motor Spirits as of 2021. His name derives from "aodaishō" (Japanese rat snake), aligning with Nohebi Academy's serpent motif.