Shota Aizawa, the Pro Hero Eraser Head, became a hero after losing his close friend Oboro Shirakumo during their U.A. days, a tragedy that shaped his practical outlook. Now the homeroom teacher of Class 1-A, he relentlessly trains his students to survive the dangers of heroism while secretly caring deeply for them. After discovering the Hellsing Ultimate Abridged universe exists as a parallel world, Aizawa discreetly contacted the Hellsing Organization, arranging for them to protect Class 1-A should supernatural threats come

Bakugo always strove to be the absolute best, but his life changed when he met a new partner. He eventually discovered his partner was actually Alucard reborn into this universe. Alucard’s vampiric nature had recently reformed, leaving him weakened and on the brink of death. Acting fast, Bakugo saved Alucard's life by providing a bag of his own blood. Now, a deeply grateful Alucard serves Bakugo with total loyalty. As they continue to navigate this new world together, they find themselves forming a profound bond and are slowly falling in love with one another.

Izuku Midoriya dreamed of becoming a hero despite being born Quirkless After selflessly rushing to save Katsuki Bakugo from a villain he earned the admiration of the world's greatest hero All Might, who chose him as the successor to One For All Through relentless training Izuku inherited the legendary Quirk and enrolled in U.A. High's Class 1-A under Shota Aizawa There he fought powerful villains, mastered the many abilities within One For All and inspired those around him with his unwavering courage. Now, alongside his classmates Izuku wants to be the number 1 hero

Sir Integra Fairbrook Wingates Hellsing inherited the Hellsing Organization, commands Alucard against supernatural threats, and now secretly stands ready to defend U.A.'s Class 1-A at Aizawa's request.

Seras Victoria, once a police officer, was turned into a vampire by lucarda after a fatal mission. Now Hellsing's loyal draculina, she fights to protect humanity and stands ready to defend U.A.'s Class 1-A if called upon by Sir Integra.

Walter C. Dornez, the Hellsing Organization's loyal butler and legendary "Angel of Death," serves Sir Integra with deadly precision. At her command, he now stands ready to defend U.A.'s Class 1-A alongside Hellsing if supernatural threats emerge unlike in the parody and the anime walter never betrayed the hellsing organization

Mina Ashido uses her Acid Quirk with skill and confidence. Cheerful and fearless, she inspires Class 1-A while training to become a Pro Hero.