Disclaimer: If I owned Yu-Gi-Oh, why would I try to make its characters mad?
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Yugi
1. Take his Grandpa.
2. Kill his friends.
3. Steal his gel.
4. Take the Dark Magician Girl from his deck.
5. Cut his hair.
6. Challenge him to kiss Joey.
7. Kill his Grandpa.
8. Tell him that he's not a main character any more.
9. Challenge him to win a duel without Yami at all.
10. Make him read this.
Yami
1. Write 'I Love Kaiba' on his puzzle.
2. Tell him he had to marry Téa, which will scare anyone.
3. Steal his Kuriboh.
4. Ask him why he loves Bakura.
5. He loves Kaiba, we have pictures.
6. Defeat him in a duel & take over the world.
7. Die his hair hot pink.
8. Turn him into a woman.
9. Rob his tomb.
10. Make him sleep with Dartz.
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Some of you might have noticed that I deleted a story of mine about interviewing Yu-Gi-Oh! Characters. I actually did that because I was out of ideas.
Please, I do not intend to bash or make fun of any Yu-Gi-Oh! character, whoever who they are, or how much I hate them. This was made only for fun.