aaronpaauls-deactivated20141206:

Cas has changed a lot, and finding those transitions have been difficult. He’s gone from being a very self-assured, confident, powerful creature, when he first showed up, to wanting to assimilate into human society more and being more unsure of himself and more awkward, and then transitioning back to being God is another big change. So, there have been a lot of shifts over time, and negotiating each one of those provides its own unique challenges, but they’re all interesting and fun and make the job a lot of fun.    -Misha Collins