The common themes could include the struggle to find purpose in later life and the pain of being overlooked. Emotions might range from quiet desperation to brief moments of hope.
There's one called 'The Lumberjack Laughs' where the woodworker keeps making crazy mistakes that are hilarious. It's funny because of the unexpected situations and the character's reactions.
Well, green eyes for female cartoon characters could symbolize something special, like mystery or magic. Also, it could just be a design choice to make them more visually appealing and distinct from other characters.
It's hard to say for sure. Both Iron Man and Thor have their unique strengths and abilities. Sometimes it depends on the situation and the plot of the comic.