I used to think Jack debuted in Yu-Gi-Oh! Arc V (I'm at the "Friendship Cup" storyline so far) , but this wallpaper brought back a memory of Yu-Gi-Oh! 5Ds, which I only some episodes of.

Thanks for recollection, and good job on the wallpaper.

OMG IT'S JACK AND YUSEI! YAY
Awesome wallpaper by the way.