Jeb is the person who 'rescued' the flock from the lab but it then appears that he turned on them. (It's a whole thing). He tries constantly to play the fatherly role to the flock. Ari is his son. This character has emotional range so I might edit one of the line just for the purpose of range since I can't seem to find the exact line that I'm looking for at the moment (after all there are 11 books). I imagine him with a deeper older voice not so much like he is elderly but maybe around 50's (late 50's) or at least that he sounds older. There is no age that is listed for this character.