Came up with some more!
Name: Mr. Spikehead (Rillo)
Gender: Male
Age: Elderly
Species: Styracosaurus
An elderly resident of the Great Valley, Mr. Spikehead, or Rillo, as he was known in his youth, lived in the valley nearly all his life, and as a result saw almost every danger that befell it, ranging from an attack by Sharpteeth that was repelled by a longneck, and a famine caused by locusts that caused many dinosaurs, including a large longneck herd, to evacuate to the then fertile east.
Over the years, Mr. Spikehead became a well-known voice at meetings, and was one of many dinosaurs who helped run things in the valley. He was one of the dinosaurs who found the confused Hooter in a pile of rubble, which prompted him to bring it up at a meeting, and attempt to resolve it*. He also spouted the odd quote of good advice, and occasionally retold events to those who asked.
Mr. Spikehead died of old age three years before the events of the first film. Although gone, the residents of the valley who knew him remember his presence and outspokenness.
*The first night Hooter spent in the valley, he was unable to find a place to sleep, and he awoke Mr. Spikehead, ultimately begging to sleep near him, as he had spoken up for him in the meetings. Mr. Spikehead reluctantly agreed, and over time they became good friends, and Hooter made his nest nearby. Nowadays, Mr. Spikehead's nest has been empty for a while, but Hooter secretly keeps the area tidy.
(I know what you're thinking. A dead character? I know it sounds strange, but I have a vague idea of a story with some of my characters, involving him in flashbacks. I got the idea while thinking about future stories. For instance, a TV series or story about LBT (or anything, for that matter) taking place ten years later would have all the main chars ten years older, have some new characters, and some of the older characters would have passed away, but you'd still see them in flashbacks, and they'd be referred to, plus the audience would remember them from the old series. With Mr. Spikehead, I'm skipping the original series, and going straight for the remake, so all we know about him is what others remember. I think it could be interesting, if I can get it to work. I'm going to need to write a story about this.)
Name: Alim
Gender: Male
Age: Teenager/Young Adult
Species: Gallimimus (Rainbow Face)
Alim grew up outside the Great Valley, in an open terrain. After reaching maturity, he and his twin brother Elim (Okay, I know they’d all have been born at the same time, they were closer than the rest) set out to find a new place they could live in, as they had always been close. They travelled far from home, finding no place that suited them. Finally, they found themselves in a valley with nothing of notice other than a large longneck statue. Heading into the valley, they were taken by surprise and attacked by a Sharptooth. Alim & Elim attempted to flee, and ended up running through the surrounding mountains. Alim was cornered, and in an attempt to eat him, the Sharptooth chomped on his leg. He was saved when Elim distracted the Sharptooth by hurling rocks at it and getting it to follow him deeper into the mountains. Alim crawled back to the valley on a wounded leg, and hid in a bush. He remained there for a week, only emerging to eat. Eventually, in an attempt to find safety, he crossed the nearby mountains, finding himself in the Great Valley. Distraught over the loss of his brother, Alim spent several weeks recuperating with several of the Valley’s residents. He recovered from his ordeal over time, although he still has a minor limp caused by the bite. His brother is most likely dead, but Alim hasn’t given up hope. However, fearful of Sharptooth attacks, he hasn’t left the Valley, and it is doubtful that he ever will.
I also have an idea for a travelling Pteranodon named Terro, but I haven't got many ideas for a story for him yet.
(I might edit both of these later, but this will do for now. I'm still not happy with the names of the Gallimimus twins.)