Theme : Deep freeze (multiple courses with a specified ingredient, containing a frozen element)

Michael Symon and Anne Burrell team up to take on Cat Cora and Robert Irvine.

Theme : Gruyère cheese

New York-based chef Nicolas Cantrel enters Kitchen Stadium to take on the newest addition to the Chairman's Iron Chef team, Marc Forgione. Will the Iron Chef do the Chairman proud, or will Chef Cantrel take down the newly crowned?

Theme : Passion fruit

It's a Philadelphia showdown as Chef Michael Solomonov takes on Iron Chef Jose Garces. Will Kitchen Stadium be filled with brotherly love, or sibling rivalry?

Theme : Mexican chocolate

Mexico City native Chef Julian Medina enters Kitchen Stadium to challenge the master of Latin food, Iron Chef Jose Garces. Which chef has the flavor, and which will fall flat?

Theme : Quail

Chefs: Chef John Rivera Sedlar and Iron Chef Masaharu Morimoto square off.

Theme : Mozzarella

Chef Emma Hearst is the youngest challenger ever to enter Kitchen Stadium! She challenges old pro Iron Chef Michael Symon. Will youth and exuberance trump age and experience?

Theme : Leg of lamb

Challenging Chef David Schneider channels his inner Ares as he enters Kitchen Stadium to battle Iron Chef Cat Cora in a showdown of Greek cuisine. Who's cuisine will reign supreme?

Theme : Radish

Challenging Chef Vitaly Paley abandoned a career behind the piano for a career behind the burners. Will he play a song of victory against Iron Chef Garces?

Theme : Wreckfish

New York chef David Pasternak and Iron Chef Masaharu Morimoto square off in Kitchen Stadium.

Theme : Mussels

Chicago chef Todd Stein is the challenger against Iron Chef Bobby Flay.

Theme : Hot dogs

Toronto chef Roger Mooking ("Everyday Exotic") battles Iron Chef Michael Symon in Kitchen Stadium.

Theme : Chum salmon

Raleigh Chef Ashley Christensen battles Iron Chef Bobby Flay in Kitchen Stadium.

Theme: Cucumber

Theme: Seaweed

Theme: Hawaiian Snapper

Theme: Okra

Theme: Short Ribs

Theme: Halloween candy

Theme: Caviar

West coast chef, Jason Knibb challenges Bobby Flay to a special seafood showdown. Whose cuisine will reign supreme?