Telemachus

In the Odyssey's first book, Telemachus is portrayed as a boy. Up until Athena comes and tells him that his father is still alive, he doesn't take much control of his family and household. But once he learns this information he takes some responsibility for things. He tells the people who work in his home what to do, he tells his mother what she needs to do, and he goes on a voyage, alone, to find his father and bring him back, yet he still isn't quite a man. In the second and third books he grows up more. He starts to turn into his manhood more.

When Telemachus tells the servants to not let his mother know that he is gone until five days after he leaves. This shows that he is still a boy and is still afraid of his mother. Also, the fact that he decides to drop everything in Ithica to try and find his father, could also be taken as a sign of immaturity.