Jowy appears with a long, sandy brown hair, which is tied in a low ponytail with long fringes in both sides, and brown eyes. While he is with Riou and Nanami prior to his permanent leave in Muse, he is wears a blue high-neck sleeveless shirt with a brown belt on the right side of his waist with extra belts with the same color, white pants and brown and yellow leather boots. He was wears a brown bracelet in both of his hands and has a yellow scarf on his waist. When he rejoins in the Highland Army and as the King of Highland, however, he wears a white and gray royal jacket under a royal blue turtleneck shirt, black pants and white and gray royal boots. He also wears a silver necklace that sticks in his neck.
As well as a child during flashbacks, Jowy's hair has became shorter and wears a modern outfit worn by the Atreides nobles, a light yellow sleeveless sweater vest with a white short sleeve button shirt and a blue tie, blue shorts and brown dress shoes and white socks.
In Genso Suikogaiden Vol. 1, his hair was changed from sandy brown to blond, as his blue high-neck sleeveless shirt changes to royal blue the same color as his turtleneck shirt from his royal outfit as the King of Highland.
In the beginning of the game prior to his leave in Muse, Jowy appears to be calm and collected to both Riou and Nanami. When he attempts try to kill Anabelle, Jowy has would becomes a cold and sociopathic due to his orders made by Luca Blight in order to gain his trust. When he rejoins the Highland Army and as the King of Highland, Jowy also appears as a stoic and yet very serious person who while relies to his comrades in the war but maintains to his cold and distant demeanor towards Riou and Nanami.
- While performing his unite attack with Riou, Jowy is seen spinning his bo staff. With his fight with Gorudo, Jowy is seen raising his sword in a flash.