Fire Dagwon is formed from the Blazing Combination of Dag-Fire with the Fire Jumbo, Fire Ladder and Fire Rescue. He can then combine with the Fire Shovel to form Super Fire Dagwon along with using Lian (Lio Sword Mode) and Gunkid (Mugenhou Mode) as weapons.
When the situation requires, Dag-Fire can summon Fire Jumbo, Fire Ladder and Fire Rescue which he will then combine with to form Fire Dagwon.
Fire Dagwon was first used in Episode 2 to defeat the Zagos Seijin and his giant robot when Dag-Fire proved no match for it.
The configuration was temporarily unusable since Episode 30, when En rammed the Fire Jumbo into Ark Seijin's castle in order to stop him from freezing Earth, heavily damaging the jet and forcing En to switch to Power Dagwon for combat. It was once again usable from Episode 38 onwards after Brave Seijin repaired the Fire Jumbo. Despite this, En would continue to use Power Dagwon due to it's greater durability and attack power.
Fire Dagwon would be lasted used in the final clash with Genocide, with the being possessing the mecha and forcing the team to deal with it. Ultimately, En would force a combination into Super Fire Dagwon and engage with the entity in a battle of willpower as they rocket into orbit. En ultimately won, but the inherent instability of Super Fire Dagwon and the stress of flying through the atmosphere would end up being too much for either mecha, with both Fire and Power Dagwon disintegrating upon breaching the stratosphere.