Board Thread:Questions and Answers/@comment-1362555-20140519102441/@comment-24524203-20141220060854

I was initially startled hearing Seth Green's voice, though I was impressed that the storywriters actually went out of their way to give an explanation for the new voice.

I'm not really about to go into an outcry about it, because Green's voice isn't that bad. I aknowledge the fact that Leo sounds more mature with this voice, but that usually depends on his mood (let's face it, he totally sounded like a teenager in his superhero dream in episode In Dreams).

It's only been a couple episodes. And if Leo's voice change has been explained away as throat damage, perhaps this is the creator's way of saying that Green is still developing his voice for Leonardo.