Well I loved the voices in AO, they were tense and very cute. The Glukkons sounded more evil big guys, and Abe sounded like a smuck, the sligs sounded cute, and it sounded they were acually wearing their masks. And I think of the main reasons why Muluck "mumbles" is becuase they wanted to make it more mesteryouse my guess. And Muluck the glukkon is a serious and cool kinda guy.
Sorry for the off-topic

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"For us, it's not about muscle bound characters with big guns. It's about little guys "
~ Lorne Lanning 15/02/2000
"We knew there were more of us out there, and were gunna find them!" ~ Abe