Seconding, thirding, whatever, Zhed Shadowhoof. It still amuses me it's the voice-actor who also did Prince Rurik. "Two legs..." indeed
The character voice for female characters is really good. I love listening to my girls in cutscenes. Magrid is pretty good as well, as is Koss. Generally, the voice-acting in NF was stellar

In Prophecies, I'm a big fan of the Vizier (great voice) and Saidra (great accent).
Factions... Mhenlo and Togo were pretty good. Voices that matched the characters' looks and personalities, imo.
For the next chapter... WTB speaking part for Cynn