Assign hotspots for the characters to walk to that keep them in full view of each other when talking. When the guinea pig first talks to Fuzzy, he walks directly in front of Fuzzy so the zombie hand is completely blocking the view of Fuzzy. Maybe set the hotspot to the left of Fuzzy, facing him. Same thing with talking to Sarah - the characters walk behind the cell door bars where you can't see them. Cheat the hotspot so they're standing in full view to the right of the bars, even though they could walk closer.