Here is my list Alive character 1. Yugi Muto (DSOD) 2. Agami (DSOD) 3. Seto Kaiba (DSOD) 4. Rafael {seal of Orichalcos} 5. Ishizu Ishtar {Millennium necklace} 6. Joey Wheeler (season 4) {The Claw of Hermos} 7. Valon {seal of Orichalcos} 8. Alister {seal of Orichalcos} 9. Leo von Schroedder {Golden Castle of Stromberg} 10. Zigfried von Schroeder Runner up: 11. Mai Valentine (season 4) {seal of Orichalcos}
Kaiba doesn't belong anywhere near that list. He is a 5th rate duelist with a 6th rate deck.
Here is my list
Alive character
1. Yugi Muto (DSOD)
2. Agami (DSOD)
3. Seto Kaiba (DSOD)
4. Rafael {seal of Orichalcos}
5. Ishizu Ishtar {Millennium necklace}
6. Joey Wheeler (season 4) {The Claw of Hermos}
7. Valon {seal of Orichalcos}
8. Alister {seal of Orichalcos}
9. Leo von Schroedder {Golden Castle of Stromberg}
10. Zigfried von Schroeder
Runner up:
11. Mai Valentine (season 4) {seal of Orichalcos}