instruction: Name the main characters of Feluda series by Satyajit Ray.
context: Feluda, or Prodosh Chandra Mitra [Mitter], is a fictional detective, Private investigator created by famous Indian director and writer Satyajit Ray. Feluda resides at 21 Rajani Sen Road, Ballygunge, Calcutta, West Bengal. Feluda first made his appearance in a Bengali children's magazine called Sandesh in 1965, under the editorialship of Ray and Subhas Mukhopadhyay. His first adventure was Feludar Goendagiri. Feluda is one of the most impactful Bengali characters of all time.
  Feluda is often accompanied by his cousin, who is also his assistant, Tapesh Ranjan Mitter (affectionately called Topshe by Feluda), who serves as the narrator of the stories. From the sixth story, Sonar Kella (The Golden Fortress), the duo are joined by a popular thriller writer Jatayu (Lalmohon Ganguli).
  Feluda has had been filmed at times, with the character been played by Soumitra Chatterjee, Sabyasachi Chakrabarty, Ahmed Rubel, Shashi Kapoor, Abir Chatterjee, Parambrata Chatterjee, Tota Roy Chowdhury and Indraneil Sengupta. Satyajit Ray directed two Feluda movies — Sonar Kella (1974) and Joi Baba Felunath (1978). Sandip Ray made a new Feluda film series (continuation of the original series) on Feluda's adventures which started from Baksho Rahashya (1996). In this series he made ten TV films and six theatrical films in Bengali on the character. Sandip Ray also made a stand-alone Feluda film Badshahi Angti (2014) which was intended to be the first film of a reboot series featuring Abir Chatterjee, but the projects were ultimately shelved and Sandip Ray revived his original film series starring Sabyasachi Chakrabarty.
response: The main characters of Feluda by  are Feluda (Prodosh Chandra Mitter), Topshe (Tapesh Ranjan Mitter) and Jatayu (Lalmohon Ganguli).