Well, there might be a friendly dinosaur who befriends the short old man. Maybe there's also a villain trying to stop their friendship. And perhaps a wise animal that gives them advice along the way.
There could be a young neighbor who is curious about the old man's life. This neighbor might visit him regularly and learn valuable lessons from him.
Well, clearly there is an old man. He is likely the central character around whom the story revolves.
Obviously, there is the terrible old man himself. There may also be other characters like the neighbors who are curious or afraid of him.
It might be a young dinosaur and its mother. In many dinosaur - themed stories, the relationship between a young one and its parent is often explored. The mother could be teaching the young dinosaur how to survive in the harsh pre - historic environment, like how to find food and avoid danger.
Maybe it's a tale where a group of adventurers time travel to prehistoric times and are on a mission to hunt specific dinosaurs for a crucial purpose. The challenges could range from dealing with the harsh environment to outsmarting the dangerous dinosaurs.
A rich man, Mr. Brown, was very greedy. He always wanted more money and possessions. One day, he heard about a hidden treasure on a far - away island. He set off on a journey to find it. After many hardships, he finally reached the island. But when he found the treasure, he realized it was not gold or jewels but a book filled with the wisdom of the ancients. This changed his perspective, and he became a more giving person.
A man might find a time - traveling device. He accidentally activates it and is sent back to the dinosaur era. He meets a group of friendly herbivorous dinosaurs. He helps them find a new water source when their old one dries up. In gratitude, the dinosaurs protect him from the more dangerous carnivores.
The other important character is the marlin. It is a huge fish that Santiago catches. The marlin is strong and becomes the focus of Santiago's struggle at sea. And also, there is the boy, Manolin, who has a close relationship with Santiago. He helps Santiago sometimes and looks up to him as a mentor.
The main characters are clearly the old man and the tiger.
Since I haven't read it, I can only guess. Obviously, the grumpy old man is one of the main characters. There might also be people around him like his neighbors. If he has a family, family members could be main characters too, such as a son or daughter who has to deal with his grumpiness.