There are a variety of characters that make Life of Pi so effiective, some characters include:
Piscine Molitor Patel (Pi)- The protagonist of the story. He is the narrator for most of the novel, and lives at sea for seven months.
Richard Parker- The Royal Bengal tiger who Pi shares his life boat with.
The Author- The narrator of the Author's Note, who includes himself throughout the story many times.
Francis Adirubasamy- The elderly man who tells the author about Pi's story. He taught Pi to swim.
Ravi- Pi's older brother.
Santosh Patel- Pi's father. He teaches his sons to care for and control wild animals, but to also fear them.
Gita Patel- Pi's mother. She encourages Pi to be open minded with different books.
Meena Patel- Pi's wife.
Nikhil Patel (Nick)- Pi's son.
Usha Patel- Pi's youngest daughter. Shy but very close to her father.