In a new twist on the classic car challenge, four smiths have to create a knife from the most mangled mess of a vehicle ever seen on the forge floor.

Four smiths must forge signature blades from W-1 steel without the aid of any electricity. The two finalists return to their home forges to recreate the blunt-tipped Sword of Mercy, the English blade still used today for coronations.

In this competition, it's all about Japan's shadow warriors -- the ninja. Four smiths are challenged to forge their own version of a ninja blade.

Four bladesmiths get scrappy when they are given thin sheet metal to forge a knife. After a brutal round of testing, two smiths return home to recreate a razor sharp Serrated Indian Sabre.

Get ready for Blades Gone Wild ... because it's all about wilderness blades on this Forged in Fire.

Four bladesmiths face double the trouble when they are tasked with forging not one, but two canister damascus knives.

Four bladesmiths enter the forge to compete in an epic first: the Knife Fight. Arriving with their best blades in hand, competitors will immediately be put to the test.

Four smiths lasso up their skills to recreate the iconic Gaucho knife. Those who survive an intense round of testing then must gallop home to forge the ornate Argentinian Saber.

Four smiths will need more than luck when they are given only a small sliver of high carbon steel and a whole lot of mild steel to forge a knife.

Four bladesmiths go back in time to the Revolutionary War to forge a Rifleman's Knife.

In this competition, the judges flip the script once again, letting the bladesmiths choose their challenge. Will they take it easy or go big to impress the judges? After an intense bout of testing, the judges take back control.

Three bladesmiths head to historic Mystic Seaport for a nautical themed competition. After a grueling round of coal forging, two travel back to their home forges to recreate another vital maritime tool: the Flensing Knife.

In the first of a five episode event, the forge is transformed into a Gladiator's arena for an epic competition unlike anything before.

In the second episode of a five-part event, it's back to the Forged in Fire Gladiator's Arena for two more ferocious one-on-one battles. The defending smith seeks to retain his title by building a Gladiator favorite: the Kopis.

In the third episode of a five-part event, it's back to the Forged in Fire Colosseum for two more intense one-on-one battles. The defending champion has taken down two opponents, including a two-time Gladiator of the Forge.

In the fourth episode of a five-part event, it's back to the Gladiator Arena. Our defending champion will face his toughest challenge yet forging the very weapon used to assassinate Julius Caesar, the Pugio Daggers.

In the fifth and final of the Gladiators of the Forge episodes, it's back to the Colosseum for the last two one-on-one battles. The reigning champion has defeated six opponents, but now must face a returning challenger.

Four smiths need to either go mai or go home when they're challenged to make a five layer knife.

Four bladesmiths must giddy-up to finish their blade first and become the fastest blade in the West. After a wild round of testing, the two remaining smiths lasso up an iconic weapon of the American Frontier -- the Vaquero Machete.

Four bladesmiths put it all on the line when they are challenged with creating their most dazzling Damascus knife.

Two friends and two brothers enter the forge as teams to compete in an epic showdown. But after working as teams to recreate a Scottish Broadsword, the victorious team will be divided and forced to face each other.

In the first of a four episode event we're calling SUPERSIZED, four smiths must salvage steel from a massive railroad track to make their signature big blades.

In the second of a four episode event we're calling SUPERSIZED, four smiths must salvage steel from a couple of 250-pound coil springs to make massive San Mai blades.

In the third of a four-episode event we're calling SUPERSIZED, four smiths face an enormous challenge when they must salvage steel from five tons of junk.

Tonight, three bladesmiths assemble as Marvel takes over the competition. Tasked with forging iconic weapons from Marvel's video game, Midnight Suns, the smiths must defeat the evil clock to build their blades.