Thunder Spark

Thunder Spark is a non-human character appearing in the Yu-Gi-Oh! ZEXAL manga. He is a Numbers Hunter working for Mr. Heartland in the Heartland Theme Park, disguised as an employee. He is also the first Duelist in the ZEXAL era to Duel in a Duel Runner-like system.

Design
Thunder Spark has many elements on his design that resemble lightning bolts; for example, his hair and the thunder drawings in his clothes. He has big empty eyes, and curiously, seems not to have a mouth. He also wears a cloak and has armor-like boots.

History
Thunder Spark is a kind of artificial human born from electron drips. Since he was a child, Thunder Spark could never touch anyone, because his body would electrify them. That continued until the present, making Spark be unable of shaking hands with the park's customers.

Yu-Gi-Oh! ZEXAL
Thunder Spark is first introduced together with Captain Corn and Koron-chan, as the "Guardians of the Heartland Theme Park". He uses his riding attraction "Speed Loader" to attract Numbers Holders, and then Duels them in a "Speed Duel" to obtain the "Numbers".

After Captain Corn's loss to Yuma Tsukumo, Mr. Heartland sends Spark to defeat him. Spark then challenges Yuma to a "Speed Duel". Spark began overpowering Yuma with his "Number", but Yuma manages to win by using the "Number" he got from Captain Corn, "Number 50: Black Corn".

After Thunder Spark is defeated, Yuma thanks Astral, and they try to shake hands, but Astral's hand goes directly through Yuma's, and they just laugh on that. Yuma then goes to where Spark is, when Spark asks Yuma to shake hands, as he "did" with Astral. Yuma accepts it, but gets electrocuted with Spark's touch. Spark explains he could never shake hands with anyone, because he wasn't a human, and would electrify anyone he touched. However, happy for being able to touch a person, Spark now says his last words to Yuma, and quietly disappears in peace, letting his "Number" to Yuma. Yuma and Astral take the "Number", as they lament Spark's "death".

Deck
Thunder Spark runs a "Thunder" Deck, spearheaded by his "Number 91: Thunder Spark Dragon". He uses many effects to swarm Level 4 monsters on his field in order to Xyz Summon the "Number", and uses cards like "Spirit Conversion Device" to recycle its Xyz Materials and use its effect every turn.

Trivia

 * When Dueling, Spark wears no Duel Gazer, and his eyes don't change in any way. It is unknown if he could see the AR Vision normally (as he isn't a human), or if he just didn't see it.