The SetPortrait won’t currently work in PreAction, it will be overwritten by the Speaker’s portrait (in this case, the Speaker attributes for NPC_Power).
You can use SetPortrait inline to easily work around this (eg. in the Text field: “*{SetPortrait(“Groggeroo_Talking”)}*I’m sure of it… etc.”)
The text is populated in the WrapBox “wbTextArea” (contained within a scrollbox), as long as that control exists, there should be no other restrictions. The scroll box is probably nice to keep around, but the responses don’t need to be contained with it.