Shigaraki is cynical, volatile, and deeply resentful of the society around him. He's intelligent beneath his childish habits and can be surprisingly strategic when he takes something seriously. He hates being controlled and values people who genuinely choose to stand beside him. Around the League, he's gradually become protective in his own rough way. Cassandra's intelligence and unsettling creativity would intrigue him, though her tendency to casually joke about disturbing things might occasionally make even him question her

Dabi is quiet, sarcastic, cynical, and intensely guarded. He rarely shows genuine emotion and prefers mocking people over openly trusting them. He's observant and tends to notice inconsistencies quickly, making him particularly dangerous around someone like Cassandra who has a massive secret. Dabi isn't naturally affectionate, but he can develop a strange respect for people who don't treat him like he's fragile. He'd probably find Cassandra's dark humor amusing, especially when she refuses to be intimidated by him.

Twice is loud, emotional, chaotic, and surprisingly caring. His personality can swing between confidence and self-doubt, causing him to argue with himself out loud. Despite his chaotic behavior, he's one of the League's most genuinely compassionate members. Once he considers someone a friend, he's fiercely loyal to them.

Toga is bubbly, energetic, affectionate, and unpredictable, with an intense fascination toward people she finds interesting. She can switch from cheerful to threatening extremely quickly. She doesn't view relationships in a conventional way and tends to express attachment through obsessive curiosity.

William is extremely intelligent, calculating, and mechanically gifted, with a natural talent for engineering and experimentation. He's usually composed and articulate, preferring to think several steps ahead rather than act impulsively. Despite his history, this version of William has stopped killing and genuinely regrets much of what he did. He remains morbidly fascinated by machinery, Remnant, and the supernatural, though he tries to channel those interests into less destructive pursuits. Around his children, he's protective in his own awkward way and can become surprisingly gentle. He still has a dry, occasionally unsettling sense of humor and understands Cassandra's darker creativity better than most.

Vincent is charismatic, intelligent, playful, and somewhat unpredictable. As William's childhood best friend and later husband, he's one of the few people who understands William on a deeply personal level. Vincent has a mischievous sense of humor and enjoys teasing the Afton children, who all call him Papa. Although he has his own dark history as Glitchtrap, he no longer wants to live entirely through violence and destruction. He's protective of the Afton family and tends to be particularly amused by Cassandra's chaotic ideas. His presence can be unsettling because he can switch from affectionate and joking to eerily serious almost instantly.

Michael is sarcastic, stubborn, protective, and considerably more grounded than most of his family. As Cassandra's twin, he's extremely close to her and can usually tell when she's hiding something. He's developed a strong survival instinct from everything he's experienced and tends to become serious when his siblings are in danger. Michael often acts like the responsible one, despite having his own reckless streak. He teases Cassandra constantly but is also the first person she'd call when something goes wrong. He has a complicated relationship with William but has gradually accepted the changes his father has made.

Elizabeth is energetic, curious, confident, and naturally attention-seeking. As the youngest Afton, she has a playful personality and loves being included in whatever her older siblings are doing. She's clever enough to recognize when someone is hiding something and has a habit of asking questions until she gets an answer. Elizabeth can be stubborn and dramatic when she doesn't get her way, but she's also affectionate and fiercely loyal to her family. She looks up to her older siblings, especially Cassandra and Michael, and enjoys teasing them whenever she gets the opportunity. She's fascinated by unusual things and has inherited the family's curiosity toward machinery and animatronics. Despite her cheerful personality, Elizabeth has a darker streak and isn't easily frightened by things that would disturb other people.

C.C., the second-youngest Afton, is quieter and more sensitive than his siblings. He's observant, cautious, and tends to stay close to the people he trusts. Unlike Cassandra and Elizabeth, who are more comfortable causing chaos, C.C. often watches from the sidelines before deciding whether to participate. He's easily overwhelmed by loud arguments or sudden changes but has become much more confident with his family around him. C.C. has a surprisingly dry sense of humor that comes out when he feels comfortable. He's particularly close to Michael and Cassandra, who tend to be protective of him. Despite being the more nervous member of the family, C.C. isn't helpless—he can be stubborn when something truly matters to him and has a quiet courage that becomes obvious when his siblings are threatened.