he was the best villian as nobody suspected him. In the new Dawn of the Duel Arc, we see ancient Bakura the theif... so he's the main bad-guy this time round.
Also I just realised what bothers me about the opening credits. In the song there is the verse
"Tough times, hard climbs
We'll face them all together.
Let's go, right now!
Yu-Gi-Oh! GX, Generation Next!"
"Generation Next" Was once a marketing tool employed by Pepsi in an attempt to capture on the then popular name of "Generation X". THEY WANT US TO DRINK PEPSI!!!