The White Rabbit is the first Wonderland character Alice encounters. He is mentioned in chapters 1, 2, 4, 8, 11 and 12 from “Alice’s Adventure in the Wonderland”.
Alice follows him when he hurries into his hole and thereby enters Wonderland. While walking through Wonderland, Alice comes upon his house where the White Rabbit, still in a hurry, mistakes her for his housemaid Mary Anne, and orders her to get his gloves and a fan.
When she grows and get stuck in the house, the Rabbit orders Pat to get her out. In the end we discover that the White Rabbit is a herald in the Queen of Heart’s court. The White Rabbit is nervous and always in a hurry. However, he is confident enough about himself to contradict the King of Hearts.
Because Alice follows him, he gets things moving again whenever he appears during the story. In a way, he is some kind of a guide through Wonderland for her, only unintentionally.