Okay so I thinkkk I have a character ending idea for Cleo and Fagen, if this needs tweaking then feel free to mess with it as much as you want.
After the war, Cleo started up an orphanage, and was described as unrecognizable compared to how she was during the war. She was a lot happier, and seemed to lose her fear of men. She lived out the rest of her days as a mother figure to plenty of children in her care.
When the war was set and done, Fagan seemed to float around the people he saw as family, whenever any of them were in dire straits he would come in and assist in any way he could. He lived out the rest of his days happy and content helping out those who accepted him in his time of need, with his duck friend always by his side.