From Archie's New Crusaders, every team has a fire guy!
He's supposed to be a cool guy, like "cool", like the name Zack Morris popped up during the design phase. My younger sister liked 'Saved by the Bell' and as kids we shared time watching television so I ended up seeing a lot of this show.
If I recall correctly I think Zack is the sort of guy who cares a lot about his hair and spends time making sure it looks good. If Fireball is like Zack, maybe they would both think fire hair is cool.