Eureka's characters are neither humans nor birds, but a species that is a mixture of the two. Each creature happens to have a face that reflects that part of us which is free, beautiful and unaware, all at the same time. Oblivious to their own beauty, protagonist's expression is a glimpse of its personality, which in turn, is inspired by a bird. Like the Mohawk, inspired by a rooster, demonstrates the latter's warrior-like qualities. The idea has been to capture the effortless beauty of the bird-creatures and contrast them with their innocently raw expressions. Because human beings are imprisoned in minds, birds are not.