the wargroove 2 editor is janky and missing a lot of assets for stuff like dialogue portraits, but it does have "Placeholder Face"
also, it displays "Testing what this might look like across multiple lines of text" when you have no text in a speech bubble
also they added in a way to play voice files outside of cutscenes, which was missing in the wargroove 1 editor, but the input for that is a text field. so you need like, an internal filename or ID