I wonder, would Junior have 2 voices? One for his skeletal form and another for his human. Grim is nothing but bones, but his voice is deep and accented. On a technical note Junior's voice could be anything from high/Scottish to deep/Jamaican. I'm personally fine with the current person voicing Junior, might change my mind depending on future recordings. I agree with Misery's opinion on Minnie though...
Misery Chord wrote: Otherwise, it makes Junior's jealousy of her come across as less understandable than it is in the comic. Minnie starts as an annoying little sister who doesn't want to be annoying, and though the first pages come after character development, traces of these traits should be present.
...This is exactly what I meant in my previous post. You don't need to give us this feeling until the flashback to when Junior wasn't as accepting of Minnie. Also, like the thought on Junior's voice, would Minnie's voice sound any different as a doll without Nergal powers?
I'd also like to thank Misery for explaining his/her opinion which also perfectly explained mine. xD