The Chrysalids At least five character traits for David and Uncle Axel. (with evidence)

David is a trustworthy and understanding person, although at times he can be lazy, as he often avoids work or plans poorly. He also often has vivid dreams in his sleep portraying his fears and prophecies. His caring nature can be seen in how much he cares for his younger sister and how he is willing to conceal Sophie’s secret of having six toes.

Uncle Axel is a kind and understanding individual, very much in contrast to Joseph and Emily Strorm. He is the husband of Emily's deceased sister, Elizabeth. He used to be a sailor until he was injured, and now he lives and works on the Strorm's farm. He is a supportive person who is willing to give help and advice to others, especially David. In Chapter 4, David confides in him about his telepathic abilities, which Uncle Axel keeps it a secret. This shows that Uncle Axel is an understanding, approachable, selfless individual. Uncle Axel also provides David with information about the world outside Waknuk.