Rockbiter: They look like big, good, strong hands. Don't they? I always thought that's what they were. My little friends. The little man with his racing snail, the Nighthob, even the stupid bat. I couldn't hold on to them. The nothing pulled them right out of my hands. I failed.
Atreyu: No you didn't fail. I'm the one who was chosen to stop the nothing. But I lost the Auryn, I can't find my luck dragon, so I won't be able to get past the boundaries of Fantasia.
Rockbiter: Listen, the nothing will be here any minute. I will just sit here and let it take me away too. They look like good, strong hands. Don't they?
When Nighthob and Teeny are talking to the Rockbiter near the beginning of the film, Teeny says to Nighthob "This could be serious", then turns to Rockbiter and calls out his name. Watch Teeny's mouth as he calls out "Rockbiter". You will see a very blatant editing mistake as Teeny is not actually saying 'Rockbiter", but is saying the next line that follows.
Atreyu's character was originally supposed to be green-skinned, as it was in the book. However, it didn't look too believable on film, and thus the green skin was scrapped.