Attack on Demoncon is the tenth short story of the Attack on Titan Anthology. It is written by Brenden Fletcher, illustrated by Babs Tarr and Cameron Stewart, colored by Babs Tarr and Jiji Knight, and lettered by Steve Wands.
During Demon-Con 2016, Lisa, Sakura, and Priyanka cosplay as Colossus Titans. A group of Survey Corps cosplayers consisting of Gin, Jemaine, Brian, and John. Gin, Brian, and John get into a fight with Lisa after Gin grabs her buttock. As Lisa fights them, she imagines herself as an actual Colossus Titan. Gin, Brian, and John end up on the floor after the fight.
During Demon-Con 2016, Lisa, Sakura, and Priyanka are wearing Colossus Titan zentai suits. As they take an elevator down, Priyanka tells her friends that she is nervous about cosplaying in front of such a large group of people and her friends comfort her. The ladies leave the elevator and start to pose for convention-goers who ask to take their photo.
A group of four Survey Corps cosplayers consisting of Gin, Jemaine, Brian, and John approach the Titan cosplayers and start to role-play. As Gin introduces himself to Lisa, he grabs her buttock and Lisa slaps him in response. Gin attempts to claim that his hand slipped but Lisa ignores his claim and transforms into a Colossus Titan.
Gin, Brian, and John attempt to fight her with their vertical maneuvering equipment. Jemanie attempts to talk them out of it but they ignore his suggestion. One by one they are killed while trying to fight Lisa.
Priyanka tells Lisa that the three have had enough causing Lisa to snap out of her fantasy. The three ladies along with Jemaine, smile as they stare at the three Survey Corps cosplayers laying injured on the floor.