It's Shawn Ashmore!
(The Following's Actual Fanboy Mike Weston, X-Men's Iceman and of course Animorphs' Jake!)
Both Shawn and Aaron Ashmore were at FanExpo Canada in Toronto this weekend and wonderful as always.
You can catch Shawn when The Following returns to Fox for season two in January and in X-Men: Days of Future Past next May.
Source: Me and my camera