Yes, Heavystep died of Greencough, although Erin didn't take him off the River Clan name list yet.
Heavystep, a ThunderClan warrior in the Warriors series, dies twice in different books: once in a battle against ShadowClan in the original series and then again in a battle against the badgers in the later series.
Because of a screw up on the author's part, Heavystep dies twice. Once in Sunset, and once in Long Shadows. His name also appears in Sunrise.
Hawkfrost dies on page 299 in Warriors the new prophecy Sunset Paperback
He died of greencough.
Moonrise
Heavystep, a character in the Redwall series by Brian Jacques, is known to have "died" multiple times in the books but always managed to resurface alive. These instances were due to errors or inconsistencies in the storytelling rather than actual deaths. It is seen as a humorous and ongoing joke among fans of the series.
The Erins have not revealed the book that Brambleclaw will die in, probably in the battle with the Dark Forest.
Firestar died in "The Last Hope" is what i heard of on the website and my friends also have told me too sorry i don't really know because i'm only on the new prophecy
In Bluestars prophecy, Her sister Snowfur got hit by a car whilst driving of Shadowclan warriors.
Birdflight does not die in a book, but she dies.
(For more detail see instructions on the website) you use your mouse to move around. Click where you want to go and what actions to take. Hunt means to hunt prey, etc. If your character gets 0 on either: Helath, hunger, or thirst, they die.
It was never revealed, but it was hinted to be of sickness.