The Warriors novel series is written by Erin Hunter. Due to the large number of characters present in the novel series, this list is divided by Clan, e.g., all characters in ThunderClan are listed together.
Many of the characters in the Warriors novel series undergo a number of name changes. In most cases a character is given an individual "first" name by their mother upon birth, based on a particular physical or behavioral trait such as fur colour (Cinder-, Ash-, Fire-, Russet-), other animals (Sparrow-, Hawk-, Jay-, Dove-, Raven-), disabilities (Torn-, One-, Crooked-), the natural surroundings (Leaf-, Holly-, Breeze-, Misty-, Cedar-), or previous family or Clan members (Tigerstar and Tigerheart, for example).
The first name serves as the first half of the character's name, to be followed by a "suffix" name based on the character's position within the Clan. Kittens are given the suffix of -kit, while apprentices are given -paw. When the character reaches warrior status, the Clan leader selects a new suffix name for them based on another trait such as personality (-heart), appearance (-foot, -fur, -pelt, -leg, -wing), in one case, choosing the suffix in honor of a previously fallen warrior, (-feather), environmental conditions or locations (-pool, -shine, -frost), or an act of doing something, (-flight, -leap, -step,). All Clan leaders take the suffix -star and deputies retain their warrior name until made leader.
Characters not belonging to the five "original" Clans (ThunderClan, RiverClan, WindClan, ShadowClan, and SkyClan) typically do not follow a standard naming structure and do not have suffix names. SkyClan cats were driven out of the forest. They live comfortably in a gorge that is some distance from where the other Clans live. Additionally, the Tribe of Rushing Water follows its own naming convention, which is detailed below.
When a kit is born in the Tribe, it is named after the first thing its mother sees, and Rock comments that it should lead to many cats being named "Wall of Cave", "Floor of Cave", or "Roof of Cave".
The way gender is denoted in Warriors is somewhat similar to how they are denoted for wolves. Females are called she-cats, and males are called toms. She-cat kits are referred to as she-kits in the novels. Tom kits are referred to as just kits.
ThunderClan is named after its first leader and founder, Thunder, and is the main Clan of the Warriors series, as all four series' protagonists are ThunderClan cats. During the original series, ThunderClan resides in the forest, sandwiched between RiverClan and ShadowClan on each side. They share very little territory borders with WindClan, and as such most of the trouble ThunderClan is forced to deal with originates either from RiverClan or ShadowClan (mostly ShadowClan). ThunderClan cats are accustomed to stalking through the thick underbrush of the forest, and are the sole users of the "hunter's crouch", a stalking technique used to hunt most forest-born prey in which a cat crouches down, stores energy in hind legs, and springs onto the target. Their main diet includes mice, voles, squirrels, rabbits, thrushes, magpies, birds, bird eggs, and shrews. Sometimes a warrior will have to eat a rat or Twoleg food.