Max Ellison is the only child of Mrs. Ellison and Mr. Ellison. He was changed into one of the afflicted by Alex Lowe after nearly dying from measles. Max murders his family and drinks their blood, and continues to do so with his classmates and teachers.
Personality and Appearance
Max is noticeably around twelve years old, but is somewhat mature for his age. He's extremely creative and cunning. It is obvious that Max knows what he wants.
One major noticeability about Max is his sadistic attitude and slight possible resentment for adults, such as his teacher (who had taken his plastic sword from him during the Halloween party) and parents, especially his mother due to her being too paranoid to get him vaccinated which nearly killed him had it not been for Alex. This could explain why he had absolutely no trouble killing adults as easily as he did. Upon secretly infecting his classmates with his tainted blood, he quickly became their leader and convinced them that life would be better off if they killed their teachers and parents and lived on their own as a pack, with no one to tell them what to do. While quite a few of the kids (particularly his friend Maddy) started feeling regret about killing their parents and missed them, Max didn't, insisting they didn't need adults anymore due to their abilities. This shows that Max reveled in his new abilities and being able to practically get away with anything.
He ignores the fact that some of the children have begun to fall ill (possibly from eating a likely drug-infected homeless man) and insists they only need to drink blood to feel better, showing a slight selfish side and addiction to killing. It only takes Kimmy dying to make him change his mind (if slightly) and accept Alex and John's offer to take them to the Hotel Cortez.
Whether he already had these violent thoughts and personality before he turned and the virus merely increased it and brought it out in the open by destroying his inhibitions and conscience, or the virus in affect changed his personality completely as it seems to have for some is unknown. Though he shows some mercy to Alex due to her being his maker, he still shows he is unwilling to give her a second chance should he see her again.
Max has light brown hair and brown eyes. He has been seen in both hospital clothing and his pirate Halloween costume.
Max is lying in his bed due to symptoms of the measles. His mother, Mrs. Ellison, had refused to get him his shots, since she was highly terrified of vaccines, believing that they cause more harm than good. After visiting him, Dr Alex Lowe let's her to understand that there is a possibility he could die if he doesn't get proper treatment. 
Some days later, Max's measles had intensified, adding pneumonia and 103+ degree fever. Alex Lowe, then, transports him to the hospital. 
Max was in full respiratory failure, but has made a "miraculous" recovery after Alex injected her blood into Max's IV bag.
Max runs to catch the school bus in a pirate costume, having fed upon his parents in their kitchen. His class is decorating the classroom for Halloween, and his friend Madeline was worried about him. He explains nearly dying from the measles, and while they lean in for a kiss, he bites her lip. He offers some of his own to exchange. The teacher comes to check on them and he slices her throat. Maddy is led to drink from her, and it's revealed that Max secretly tainted snacks for the class's Halloween party with his blood, infecting the other children. The principal, who comes to check on the class after one of the students stumbles out as he turns, is the next meal for the hungry class. He barely escapes to the office, and the staff puts the school on lockdown. A SWAT team finds a trail of blood and bloodied corpses throughout the hallways, and they escort the infected children out of the school. Maddy and Max's friend Jimmy tell a rehearsed story about a masked intruder, as do the rest of the classmates. 
Max influences the other children to kill and feed on their respective families until they attract the attention of the media when a homeless man is found exsanguinated. Alex sees the report on television and finds the children at Max's house where they have killed and fed on a delivery boy. She offers Max and the others sanctuary at the hotel but, having become addicted to their new power and under Max's influence, they refuse and while they let her live on his orders, they threaten to kill her if she ever interferes with them again. After The Countess realizes what has happened she gives Alex one chance to reconcile her mistake, threatening to kill both her and Holden if she fails. She returns to Max's house where one of the children dies from starvation, at which point they decide to go with Alex to the Cortez. Alex and John trick the children and lock them in The Countess's Hate Vault where they are assaulted by Ramona Royale. 
- Max (to a policeman): "Yes sir, I know exactly what happened."
- Max (to Maddy): "I'm just so much better now."
- Max (to classmates): "Drink, it'll make you feel awesome."
- Max (to Maddy): "Now it's your turn to taste my blood."
Madeline was a young student and friend of Max, deceived and turned into an afflicted by the boy. After being infected by the blood virus, Madeline became one of the children wreaking havoc at school, feeding on teachers, and then at home, feeding on their own families. However, it was shown she (like some others) felt regret at killing her parents, despite Max's insisting they didn't need them or any adults anymore. After following Alex Lowe at the Hotel Cortez, she eventually finds death in one of Cortez's hallways.
- Max Ellison marks Anton Starkman's first appearance on American Horror story.
- Max Ellison is but one of the juvenile sadists in the series. The other was Jenny Reynolds, a sadistic little girl in "Asylum" who even briefly bonded with the Demon possessing Sister Mary Eunice. Another noteworthy is Dandy Mott, who started his crimes at a very young age but, unlike Max, managed to reach adulthood continuing to perpetrate his sadistic games in "Freak Show."