Fallen Leaves

Fallen Leaves is a ginger-and-white tom who existed before the Clans came to the lake.

In Dark River
Fallen Leaves' Story:

-In Dark River's prologue, it is revealed that there were once hidden caves beneath the moorland. Fallen Leaves, a mysterious cat not seen before in any of the books, enters this cave, meeting an ugly old cat by the name of Rock, who explains to him that to be a "sharpclaw"--apparently an equivalent to the Clans' warriors--he must get out of the tunnels and into the moor before it's too late. Unfortunately, when Rock asked if it would rain, Fallen Leaves said no, because he was afraid that Rock would make him wait until another day. Fallen Leaves enters the tunnels, and appears to be heading in the right direction. However, he comes to a dead end just as it begins to rain. Unable to escape, the young cat drowns in the tunnels.