"Dueling mean to me bonds and connection, and that Dueling and fighting is different." — Yuma to Astral in "Yu-Gi-Oh! ZEXAL - Episode 026".
Yuma Tsukumo is the main character of the Yu-Gi-Oh! ZEXAL series. He is energetic and has a lot of confidence and vowed no challenge, no matter how impossible or stupid they seem to be. He is very stubborn and will initially seek help from Astral. However later, he considers him as his friend. He is also hunting Numbers to recover Astral's memories.