Daffy Gremlin is a memorable character from the 'Gremlins' film series, known for his erratic and hyperactive personality. He is easily recognized by his wild eyes and incessant laughter, standing out among the transformed gremlins in 'Gremlins 2: The New Batch.' Daffy brings comic relief with his unpredictable antics, often causing chaos in a childlike, mischievous manner. His role in the series highlights the unpredictable nature of the gremlins and adds a unique touch of humor to the story.