Here's a few...
Jake Sulley
Neytiri
Grace
the corporate buisness greedy guy (whose name is Parker)
the security officer guy
the girl who gets blown up in a helicopter (whose name is Trudy)
the guy whose avatar dies (his name is Norm and his Avatar doesn't die, he is just wounded and later healed)
Tsu' tey
Neyturi and Jake Sully also Rachel. (note that in the being she said she would die to get her hands on one of those ancestor strings and she died, getting a sample. MORAL: Be careful for what you wish for, cause you just might get it).
If you mean The Last Airbender then here you go.
Aang (the avatar)
Katara (part of the original gang, his waterbending crush and best friend who becomes the mother of his kids)
Sokka (part of the original gang, Katara's nonbending brother)
Toph (is the fourth member of the gang, and teaches Aang earthbending)
Suki (joins the gang in the end of the series but is introduced early on, she is a Kyoshi warrior, and Sokka's girlfriend)
Zuko (the crazy firenation prince banished at 13, but becomes good and a part of the gang to teach Aang firebending)
Azula (is Zuko's sister who goes mad by the end of the series also she is a firebending prodigy)
Mai and Ty Lee (are/were Azula's closest friends until they turn their backs on her to help Zuko, partly because Mai is Zuko's girlfriend)
Iroh (is Zuko and Azula's wise uncle and invented the redirection of lighting)
Appa and Momo (are Aang's animal guides, Appa is a sky bison and Momo is a flying lemur)
The Freedom Fighters (are a group of teenagers who's parents were all taken by the firenation, and fight against the firenation, and they compose of Jet, there leader and is skilled with hook swords. Smellerby, his right hand girl, most people think she is a boy but you were all wrong. Longshot, he is a deadeye when it comes to his bow and arrow, he only gets one line in the whole series, and is Jet's second best friend. Pipsqueak and The Duke are the last of them. Jet actually ends up being Katara's boyfriend for a little while actually)
Yup, that's all of 'em.
The characters' names were as follows. For the actors' names, you'll need to ask the question.
Norm Spellman- Avatar driver and colleague of Jake Sully.
Jake Sully- Parapalegic ex-Marine brought to Pandora to take his deceased twin brother's place as an avatar driver.
Dr. Grace Augustine- Head of the avatar program and activist for preserving the Pandoran global ecology (not economy).
Parker Selfridge- Agent of the RDA (Resources Development Administration) in charge of the mining of Unobtanium on Pandora.
Colonel Quaritch- Veteran officer serving in the Marine Corps as head-of-security on Pandora.
Neytiri- Na'vi huntress and the daughter of the chief and the Tsahik of the Omaticaya clan (as well as the future Tsahik).
Mo'at- Neytiri's mother and the Omaticaya's Tsahik (spiritual leader)
Eytukan- Omaticaya's clan chief (olo'eyktan) and Neytiri's father.
Tsu'tey- Omaticaya warrior and future chief (as well as Neytiri's future mate).
If it is the avatar with blue people in it, then it is Jake sully and Neytiri, The people acting them is Audrey and Zoe
Jake Sully, Grace Augustine, Trudy Chacon, Norm Spellman, Max Patel, perhaps a few more scientists, and all of the Na'vi (natives of Pandora).
Jake Sully
Neytiri
(partly main characters):
Colonel Miles Quaritch
Dr. Grace Augustine
Parker Selfridge
Jake sully
the blue people
Jack Dawson and Rose Dawson from 1997's Titanic, 2nd only to Avatar in total amount of money made.
9 main characters
The main characters in the movie Land of the Lost were Dr. Rick Marshall, Holly Cantrell, Will Stanton, and Cha-ka.
Well.... theres a lot of main characters in the movie unknown ill give a couple Beshoy, Jason, Modanna, and the mighty Marcos.
The character known as Colonel Quaritch played the lead antagonist in the movie Avatar.
Jake Sully and Natiri
the blue people
yes she has made a song called i see you and Leona plays neytiri in avatar one of the main characters
No it is a fantasy + fiction movie about imaginary characters in a planet in space.
Jack Dawson and Rose Dawson from 1997's Titanic, 2nd only to Avatar in total amount of money made.
The main male heroes are: Aang ( the avatar) Sokka Appa Zuko ( eventually) Roku Jet
The characters that appear the most in a movie. If you are talking about a specific movie please give a title
9 main characters
Your question is somewhat difficult to interpret, but perhaps what you mean to ask is, why do some movie characters work better as main characters than they would as minor characters. The answer would be that if the more interesting characters are the main characters, then the movie itself will be more interesting.
"Jaws" is a movie about a shark that came out in 1975. The three main characters in this movie are, Chief Brody, Matt Hooper, and Quint.
The main characters in the movie Land of the Lost were Dr. Rick Marshall, Holly Cantrell, Will Stanton, and Cha-ka.