The Rise of Evil is a series by Zaffie. It is quite ridiculously large, and moderately well known on the wiki. The Rise of Evil started off just being six books, and then it expanded, and then it expanded some more, and it now consists of two series, two Specials and two spin-offs.
The main Clans in the Rise of Evil are WonderClan, GorgonClan, VanishClan, MoonClan and eventually AshClan. They all have quite silly names. Luckily, no one seems to mind too much, so it's all good.
The Rise of Evil
The Rise of Evil Special: The Parting of the Clans - Complete.
The Rise of Evil: One - Complete.
The Rise of Evil: Two - Complete.
The Rise of Evil: Three - Complete.
The Rise of Evil: Four - Complete.
The Rise of Evil: Five - Complete.
The Rise of Evil: Six - Complete.
The Rise of Evil Special: And Then There Were Four - In Progress.
The Rise of Evil 2: One - Complete.
The Rise of Evil 2: Two - Complete.
The Rise of Evil 2: Three - Complete.
The Rise of Evil 2: Four - In Progress.
Prisoners of GorgonClan - The series begins after The Rise of Evil: Four.
Prisoners of GorgonClan: One - Complete.
Prisoners of GorgonClan: Two - In Progress.
The VanishClan Games - The series begins after The Rise of Evil: Five.
The VanishClan Games: One - Complete.
The VanishClan Games: Two - In Progress.
MoonClan's Journey - The series begins after The Rise of Evil: Two.
MoonClan's Journey: One - In Progress.