User blog comment:TheDarkKnightHasRisen/Connor: The child, the apprentice, the Assassin/@comment-3168501-20121006222145/@comment-3168501-20121007033048

I'd assume he's about 15 or 16 years old. He's still not big enough to fit into his Assassin robes when he first meets Achilles. And he does sound a bit younger now that I've seen it twice and compared it to his adult voice. Noah Watts did a good job making him sound like his voice matured over time. Roger Craig Smith did good with Ezio, too. Maybe Connor's robes were Achilles' robes before he got hurt (and from when he was younger).