What makes it full-cast
The hard part of a multi-voice audiobook is not the voices — it is knowing who is speaking. VoiceYourNovel attributes dialogue line by line, following speech tags, alternating exchanges, and aliases, so "the Warden", "he", and the character's actual name all resolve to the same voice.
Every speaking character in the manuscript is surfaced into the cast list. You can merge duplicates, rename entries, and decide whether minor characters get their own voice or share one — the cast mirrors your book, not a fixed template.