I wanted to get in the mind of my character's more, so I filmed myself acting out the voice sequence again, this time trying out reacting as both characters. I don't think I'll directly use the footage as reference in my animation, but definitely found it helpful to try out reacting some more. I had a better idea of how I wanted my characters to react.
I finalised some turnarounds for what I wanted the characters to look like. I have been using the 'Fire Magic' clip thus far, to which I imagine the main character would be a king complaining about his incompetent army, unable to use fire magic against their enemies. The second character I see as something like the king's adviser, agreeing with the king, but ultimately surprised by his outburst later in the dialogue.