Peck is a supporting animal character in the anime Tokimeki Tonight. He is the pet bird of the Eto family and also serves as the family's servant, living in the household alongside the main characters. He is a talking bird, sometimes depicted as a parrot, and he can speak and interact with humans on equal terms.

In terms of personality, Peck is friendly, talkative, and lively. He is sociable and enjoys being around others, and he frequently provides witty commentary and jokes, making him a regular source of comic relief. He has a playful and somewhat impulsive side, and he tends to avoid unpleasant situations, at times hiding when he expects to be scolded by the protagonist's grandfather. His cheerful disposition makes him a constant and memorable presence in the Eto home.

Peck's role in the story is that of a supporting companion and a source of humor. He is regularly seen with Ranze Etou, the central protagonist, and her friends, where his remarks and antics contribute to the lighthearted tone of the series. On occasion, his abilities assist the main characters in overcoming problems, and he remains loyal to the family he serves. His motivations are not explored in great depth; he is primarily characterized by his attachment to the Eto household, his desire to stay out of trouble, and his willingness to help in his own way.

Peck does not undergo a major character arc over the course of the series. Instead, his consistent traits of loyalty, cheerfulness, and mischief define his presence throughout. His notable abilities include the power of speech, an excellent memory that lets him recall people, places, and events in detail, and talents such as singing and dancing, which he performs as part of his lively personality.