Iron Woobie: A vast majority of the cast. World War II does that to people. Though a notable example is Death, who has the most miserable job on Earth and still cares about humans.
Questionable Casting: Some fans of the original novel weren't happy with the casting of Geoffrey Rush as Hans Hubermann because they pictured the character younger and handsomer.
Squick: Max vomiting into the soup that Rosa fed him.