I'm not entirely sure without more research, but usually in such a novel, there would be a protagonist. This character would be central to the story, perhaps a person living in or around Alexanderplatz, experiencing the events there.
The author of 'Berlin Alexanderplatz' is Alfred Döblin.
One of the main themes could be urban life. The setting of Alexanderplatz gives a backdrop of the bustling city with all its chaos and opportunities. Another theme might be the struggle of the individual, as characters navigate through the challenges of life in this urban environment.
It's significant because it is a great work of German literature. It helps in understanding the culture and the human condition in Berlin. The novel can be seen as a mirror reflecting the city's complexity, with its diverse cast of characters and their interwoven stories.
In 'Heidi the novel', Heidi is the key character. She is a young girl with a pure heart and a love for nature. Her grandfather, who initially seems a bit of a recluse but has a warm heart deep down. Peter, he's the boy who takes care of the goats and is Heidi's playmate. He has his own simple charm. Clara is another significant character. She is a frail, wealthy girl from the city. When Heidi goes to the city to be her companion, their lives become intertwined. The interactions between these characters drive the story forward and show different aspects of human nature and life in different settings.
There is usually the archaeologist. They are important as they are the ones who often discover the mummy and start the whole chain of events. Another important character could be the mummy itself, as it is the central focus of the story.
Arthur Holmwood is significant. He is Lucy's fiancé and is deeply involved in the attempts to save her from Dracula. Quincey Morris is also important. He is an American and brings a different perspective to the group of characters. His loyalty and courage are important in the fight against Dracula.
Encolpius is an important character. He is the narrator and main protagonist, through whose eyes we see the strange and chaotic world of the story.
Obviously, the seven sisters are the most important characters. Each of them has their own personality, dreams, and goals.
Bryon is an important character. He is one of the central figures through which we see the story unfold. His experiences and growth form a large part of the narrative.
Dorothea Brooke is an important character. She is a young, idealistic woman who is searching for a more meaningful life. Then there's Tertius Lydgate, a doctor with great ambition. His experiences in Middlemarch show the challenges of trying to bring new ideas to a traditional town. Also, Mr. Casaubon is significant. He is Dorothea's much - older husband, and their relationship is complex and full of misunderstandings.