He owns a white and yellow Duel Gazer with a green lens, matching the color scheme of his ace, "Number 39: Utopia".
Yuma bears a striking resemblance to his father, Kazuma Tsukumo, but has inherited his mother's red eyes.
In his nightwear attire, he wears a red-white t-shirt, grey pants, and sometimes green slippers, but Yuma mostly goes barefoot around his house.
During the Heartland Academy festival, Yuma wore a "Temtempo the Percussion Djinn" cosplay.
Here they address the problem of radiocarbon dating these residues by accelerator mass spectrometry (AMS) which in turn dates the use of the pot.
Yuma believes Duelists cannot be bad people and believes a Duel to be a clash of souls.
Yuma's good-nature appears to make him naive as he believed that Flip really had good intentions, even after his friends had warned him he was a swindler from the start.
Yuma is a hasty, energetic, and cheerful young boy who likes to challenge himself to do anything that seems impossible, which he normally fails at.
Undaunted by his failures, he states that doing these challenges gets him fired up and will eventually accomplish what he sets out to do.