| Description | Challenger Name | Iron Chef opponent |
| First and only Brazilian challenger | |
| Cutting board incident. Need I say more? | |
| Challenger when Kaga boycotted a battle | |
| 100th and 21st Century battle challenger, infamous Kitchen Stadium rival | |
| A loser to Chen once before, he was the first challenger to defeat IC Kobe | |
| Fought first and only sushi battle in Kitchen Stadium | |
| His battle against Nakamura was deemed unacceptable--so they fought a rematch | |
| Former IC who fought as a challenger against Morimoto | |
| Last regular challenger in Kitchen Stadium | |
| Though it took two tries, first challenger to defeat IC Michiba | |
| Founded a 'faction' to take down IC Morimoto's 'Neo-Japanese' cooking style | |
| First challenger to tie an Iron Chef | |