Originally introduced as "Vanya" (played by Elliot Page), Viktor is the biggest change from the comics. Raised as "ordinary" and medicated into submission by Reginald, Viktor eventually discovers he is actually the most powerful of all—capable of converting sound into destructive energy. Viktor’s storyline is a nuanced metaphor for being emotionally gaslit, for neurodivergence, and for the explosive rage of the forgotten sibling.

The Umbrella Academy's early years are marked by tragedy and trauma. The children are raised in a sprawling, dilapidated mansion on the outskirts of Dallas, Texas, where they're trained to fight and save the world. However, their upbringing is far from conventional. Hargreeves, a distant and emotionally unavailable father figure, pushes his adopted children to their limits, often crossing the line between training and exploitation.

The production design is a clash of eras: Victorian mansions with brutalist interiors, 1950s diners with futuristic hover technology, and a time-traveling commission run by a board of apathetic anthropomorphic Swedes. It feels like Wes Anderson directing a horror film.

Numbered rather than named—One, Two, Three, Four, Five, Six, and Seven—the children were trained to form a superhero team called . However, Reginald was less a loving father and more a cruel drill sergeant. He pitted the children against each other, locked them in mausoleums to "conquer fear," and emotionally neglected every single one.

The story begins with the 43 mysterious spontaneous births of children to women who showed no prior signs of pregnancy

Played by Tom Hopper, Luther possesses superhuman strength and durability. After a mission gone wrong, Reginald saved Luther’s life by grafting his torso onto the body of a Martian ape (yes, really). Luther spends the first season as the dutiful son, desperate for his father’s approval. His arc is about learning that obedience to an abuser is not nobility.