
Ripred's goal in this quest was to overthrow the rats' monstrous king, King Gorger, and attempt to gain power.

He fulfills the role of "one gnawer beside", as the Prophecy of Grey foretold. The first time Ripred appears in the series is in the first book, Gregor the Overlander, to act as a guide for Gregor and other characters attempting to find and rescue Gregor's father from the rats.

These events all transpired before the main character, Gregor, had discovered the Underland. Though Ripred survived this attack, he decided that the constant warring between rats and humans in the Underland was pointless. Hoping to wipe out the rats completely, the humans destroyed the dike holding back the water and began to drown the rats and pups in the garden and surrounding caves. In an effort to protect them from the attack, the rats herded the pups into caves surrounding the garden. One day while many rats were enjoying the garden, the humans, led by Solovet and her son Hamnet, launched a surprise attack. During one of the rare peaceful periods between rats and humans, they shared a beautiful garden filled with apple trees and other delicious fruit. Ripred is one of the older characters in the series as he has known the human King and Queen of Regalia for many years. The books describe him as being just as large as the other six-foot rats of the Underland, having a gray coat, and is marked by a diagonal scar across his face. Ripred is usually sarcastic, snide, and overbearing, but he has occasionally shown compassion and tenderness, especially with the main character's younger sister, Lizzie. Even though he is a rat, or a gnawer, as the Underlanders say, he often fights alongside the humans - frequently against other rats. Ripred is what many people and animals in the Underland refer to as a "rager", or a natural born killer.

He is an important character in all five of the series' books. Ripred is an abnormally large rat and capable fighter who appears in Suzanne Collins' The Underland Chronicles.
