In the game he is not wearing his iconic Machine Gun Jetpack, instead relying on ranged weapons (Shotgun, SMG, Grenade, etc.) to kill hordes of zombies. In the dialogue, he is shown to be adventurous and ready to jump into action whenever possible, and is often willing to help people in trouble, such as Prince Runingunin, Tanaka, and Ruby.
In his first ever appearance, Age of Zombies, Barry is portrayed as a parody of an action hero, who travels through different time periods to save the world from the zombie apocalypse. One of the earliest artworks of Barry from Age of Zombies After he breaks inside the Legitimate Research, he ditches the glasses, rips his shirt sleeves off and steals the Machine Gun Jetpack from the Scientists, making him look identical to his in-game appearance. In the official trailer, which serves as a backstory to the game, Barry appears as a struggling gramophone salesman, with combed hair, glasses and a dress shirt with the sleeves intact. Despite that, players can change his in-game appearance by buying and changing his Clothing in The Shop.