After discovering that Harper is the mole, Ryder is given the choice of either remaining with the RDA or helping Harper protect the Navi. If Ryder chooses to stay with the RDA, the avatar is killed and Ryder remains human throughout the rest of the game. Later, Ryder will be given the mission to kill Tan Jala which, of course, will be successful. Near the end of the game, Ryder will then meet with a Navi leader who will then give Ryder a new choice. Either stay loyal to the RDA, or switch sides and help the Navi. If Ryder chooses to aid the Navi, after the attack on the Well of Souls is repulsed, an Ikran appears with an alive Tan Jala riding it.
Pandora is supposed to have less gravitational forces than those of Earth. It's the main explanation for why creatures and plants grow so much larger there. However, if a human character falls from a height considered survivable on Earth they will still die.
Shows the Na'vi queue being connected with the Direhorse, as well as the Banshee. Yet, when you ride the former in the game, there is no visible connection between the playable character and the animal. Also, when riding both, there is no animation to show the connection happening.