Q: "Why is Robo married to an anthro penguin?" A: Penguins have a society in Katamari! If you pay attention to the collection descriptions, you will see that Queen Natasha is the penguin queen.

Q: "How does she have penguin chicks?" A: Same reason why there are cowbears.

Q: "Who is Robo married to?" A: In our main universe, Robo is married to Robert. However, in the Amazing Katamari Damacy Universe, she is married to Robert AND the Queen. But in the Action Drive universes, Robo/Elle is just married to the Queen. But don't worry, Robert isn't alone!