Fire Man was built by Dr. Light to work in an incinerator at a waste management facility and is able to wield flames that can reach 7000-8000 degrees. Fire Man can melt or burn through almost anything with his Special Weapon, the Fire Storm, whose weapon system excellently combines offense and defense.
A hot-blooded and charismatic, albeit hot-tempered individual, Fire Man sees himself as something of a hero- obsessed with fire and the ideals of justice, often referring to himself as the "Flame of Justice". He enjoys camping in the summer, but has a particular dislike for rainy days and the cold- particularly from his weakness, the Ice Slasher. [Source: wikia]