The seal is always the best background for him. Look how evil and satanic he looks.

Opinion time,

Dartz always felt more like a final boss than Bakura for me. Reasons:

• Bakura was Zorc, and Zorc was the lord of darkness itself. But still, he was just and evil figure, he just appeared at the end and he couldn't even hurt anyone (I mean characters). Orichalcos was much more than that. It literally destroyed millions of lives, mostly using Dartz. It also destroyed Atem emotionally.

• Zorc was just trying to be evil and collect millenium items. And guess what? Dartz was not even interested in the items, since Orichalcos easily blocked their powers. (Yeah, I know how anime works, the new evil is always stronger then the previous one bull*hit)

But I'm not talking about logic here, I'm comparing two main villains, one is canon, and one is filler. Yet, the filler stands stronger. Not only Dartz's arc was darker than the Egypt arc, it also took place in present time. Zorc's battle actually happened in the past. The whole arc was about time travel. Meanning that Dartz is actually the final villain. (I don't count DSOD)

• Both Dartz and Orichalcos are much older than Egypt itself. Atlantis... And to think no place could be more mysterious than Ancient Egypt.

• Zorc was trying to destroy Earth while Dartz was going to destroy Duel Monsters' world too.

• A kind looking villain is always better than the evil looking villain for me. Zorc was clear with his ambitions, be evil and destroy the world. But Dartz was acting and thinking as if he is a savior, a holy man trying to purify the world and declaring every human is a sinner. Which makes him a realistic villain, as in real world, all villains are heroes in their perspectives.

• Bakura kept losing and losing to Atem, making himself an easy villain. Hell he even defeated Pegasus because he was tired. And let's look at Dartz, his minions already managed to defeat Pegasus, Atem and Joey. (I don't care if Atem's loss is unfair. A loss is a loss. I don't care if it's not canon to the manga either. Anime has its own canon.) He defeated Kaiba and he could beat Atem too. If you watch his duel, you can see that he prefered to finish Kaiba first. He only dueled once, and he already proved to be an ultimate boss.

I'm not saying Dartz is the best villain. That's completely subjective. I'm saying that he is the real final boss of DM anime. Not Bakura. Sorry manga fans. Also I don't hate Bakura, I love all DM villains.