Achi was described as a young boy; several years younger than Shane.
In the Books
Achi first appears when Shane took refuge an abandoned village without knowing Achi was there. In the middle of the night, Shane is ambushed by hyenas; he is ready to fight them off, but Achi appears and knocks both of them unconscious. He then asks if Shane is all right, then notices the crocodile tattoo on his chest.
- "Achi" is a Hebrew name meaning "my brother".