In case you hadn't seen enough mad scientist material.
Brody was a fan of all types of birds.
When the "Destroyer of Worlds" arrives, he always travels with skulls, naked angels, and still beating hearts. It's like his entourage.
"You wouldn't believe how many still beating hearts he asks me to carry in my bag when we go out. Gross."
Displayed prominently in the tattoo shop. You know, just in case you weren't already scared of needles.
Brody ponders whether or not he needs to get a spaceman with a cross thru it tattooed on his other arm. He wouldn't want people to assume he loves astronauts.