Journey to the River Sea

Maia is an orphan and the main character of the book. Bright, passionate, adventurous, determined, and resourceful, Maia has great ambition and a talent for music. She used to live and study in a boarding school in England, called "Mayfair Academy for Young Ladies"; all fees were subsidized by her parents' trust fund. Her parents have died and she journeys to the Amazon to live with her relatives, the Carters, who exploit, neglect, and abuse her, only keeping her under their roof for the sake of her parents' money. She grows close to her governess, Miss Minton. She also forms remarkably close bonds with both Clovis King and Finn Taverner, who are, if in different ways, in lonely and vulnerable situations similar to her own. Maia also meets many people such as professor Neville Glastonbury, Sergei, and Olga. Maia is excited and mystified by the unexplored Amazon and deeply cares about it once it becomes her own home. She is a kind, bright person who is very adventurous and has a vibrant personality. She was excited to live in a jungle.

Clovis (Jimmy Bates, Clovis is his stage name) is an impoverished boy actor who dreams of going home to England. He has a mishap in Manaus and leaves the acting troupe as they fall into debt and are arrested. Later, Clovis takes Finn's place as heir at Westwood in England, convincing detectives of the false identity. He is reunited with his foster mother who persuades him to reveal his true identity. Clovis tries to reveal his identity on several occasions—one of which results in disaster he can "have Maia when she's grown up." He ends the book living as the wealthy heir 'Finn Taverner'. Clovis is kind

Finn Taverner is the son of Bernard Taverner. Finn is the real heir of Westwood. Sir Aubrey sent the crows to find Finn as he needed the son of Bernard Taverner to inherit Westwood. He was really adventurous and loved to spend time with the nature. He wanted to become a doctor who used many natural medicines and herbal cures. He had two personalities; one was the Indian side and the other was the European side. His main goal was to reach to the Xanti who were his mother's relatives. He was a true and good friend to Maia and Clovis. He had a boat named Arabella, on which he travelled and collected the medicinal plants of which he was so fond.

Bernard Taverner is the third son of Sir Aubrey. After escaping from Westwood, he became a naturalist and lived in the Amazon. He had a brother named Dudley and a sister named Joan. He was once saved by the Xanti and married a girl called Yara from the tribe. He later had a son, Finn Taverner, and lived in Manaus with plenty of friends, such as the Indians, Professor Glastonbury and many more people.

Mrs Carter is the twins' (Gwendolyn and Beatrice) mother and Mr Carter's wife. It is clear she only took Maia in for the money that came with her. She is greedy and demonstrates signs of increasing mental instability towards the end of the book. She doesn't spend money on Maia's needs, such as piano lessons. Instead, she uses it to buy clothes for herself and her daughters, along with a variety of insect repellents (she hates insects). She is in debt, and all the other families living in Manaus despise the Carters. When her house is set on fire, she goes to live with a distant relative, who turns Mrs Carter into her personal maid.

Mr Carter is the twins' father. He is in debt in Manaus and is wanted for fraud in England after embezzling the bank where he worked. He is shown to be manipulative and has an obsession with collecting famous peoples' glass eyes. At the end of the novel, he is sent to prison in the Amazon after failing to pay workers and loan sharks. He also gets taken to prison by Gonzales. Mr Carter is a very mysterious man; he doesn't really care for his family and spends all day in his messy office obsessing over his collection of eyeballs. He loves his collection of eyeballs to such an extent that when the Carters' home caught fire, he chose to retrieve his collection of eyes from his office instead of helping Maia from the burning house. When questioned by Miss Minton at the hospital, he claims that he tried to get to Maia's room, but the fire prevented him from reaching her.

Miss Minton is the governess of Maia. She is reserved. She is introduced as a "tall, gaunt woman" wearing black clothing and frightening accessories such as a hatpin modelled after a Viking spear and a steel, beaked umbrella. She is kind and concerned with routine and proper learning, encouraging Maia to study Portuguese, for example, in the empty dining room of a ship caught in a storm, or asking Finn to continue his Latin studies whilst in the Amazon rainforest. She loves reading books, particularly Shakespeare. A close friend of Bernard Taverner, she is revealed to be the maid who helped him escape his abusive household and reach the Amazon when they were younger. This is realised as her friend named his boat after her: the "Arabella". Miss Minton takes the job with the Carters in order to follow her late friend's journey to the Amazon. She is extremely intelligent, having been revealed to have knowledge of all the plots the children concoct but allowing them to take place. She has a witty and dry sense of humour, and is cunning, using deception and acting in order to protect the children from unkind and corrupt individuals, such as the detectives. Miss Minton grows to love Maia and treats her like her own child. She finally manages to persuade Mr Murray to let her, and Maia live together in the Amazon. Furthermore, she seems to find romance with Doctor Glastonbury, a naturalist, and Bernard's close friend. He eventually proposes to her, but she is not certain of her suitability to marry.

Mr Trapwood and Mr Low are two detectives who search for Finn (who is the legitimate heir) on behalf of Aubrey Taverner. They are greedy, hoping only for money in exchange for their work, and are clumsy and unkind in their attempts to discover the boy. Two unwittingly comedic individuals, Mr Trapwood being harsh and tall and Mr Low being short with a high pitched tone, they wear only black suits despite the weather. Whilst being led astray from their mission by residents of Manaus and the Amazonian Natives (all of whom despise them, being friends of Bernard and Finn Taverner), they befall a series of comedic misfortunes. Their racism towards the Natives is also their downfall, as they are mocked by the tribes, refuse to change out of British attire and therefore overheat, and are easily deceived by Finn's charade towards the end of the novel due to their irrational prejudices. They are often referred to as 'the crows'.

Miss Emily taught Maia in her boarding school before she left for Brazil. Miss Emily is very close to her sister, Miss Banks, and has a very strong bond with her. She is a comforting presence for Maia. She is in her 40s and is very kind.

Professor Neville Glastonbury (The curator of the Manaus Museum) is friends with Bernard Traverner and Finn. He helps Maia with the swap of Finn and Clovis, and he helps Miss Minton find Maia. His wife died a few years ago.