He becomes leader in chapter 3 and 4 in The darkest hour.
Fireheart becomes Firestar in the book "A Dangerous Path," which is the fifth book in the Warriors series by Erin Hunter.
Fireheart
Firepaw Fireheart or Firestar
He becomes Thunderclan leader.
Well Firestar admits to himself that he loves her and she loves him. So it is generally admitting things that they became mates.
Yes, Rusty, Firepaw, Fireheart, and Firestar are all the same cat in the Warriors series by Erin Hunter. The cat starts as a kittypet named Rusty, joins ThunderClan as an apprentice named Firepaw, becomes a warrior named Fireheart, and eventually becomes leader named Firestar.
Fireheart's mother is Princess, a kittypet who lived in Twolegplace. She is also the mother of Firestar's littermates, Scourge and Socks.
Firepaw becomes fireheart in into the wild and later in the darkest hour he receives his leader name firestar (after Bluestar dies).
Firepaw/Fireheart/Firestar is the main character for a while.
I don't think he kills any cat as Fireheart, but he kills Scourge, evil leader of BloodClan, as Firestar.
He was Firepaw/Rusty the kittypet in the first book. Fire heart becomes firestar later on.
after she dies, fireheart becomes firestar, and graystripe is made deputy.
His kittypet name was Rusty, then he became Firepaw, then Fireheart, then after Bluestar died (stupid tigerstar, grrr) he became Firestar. rusty firepaw fireheart firestar[i hate tigerstar!!!] I agree I hate Tigerclaw/TigerStar :( i hate tigerstar also but he is funny,as a kit in Bluestars Prochey