Adam Milligan is a lot like Dean, and just like Dean, he is a "ladies' man". He is very sarcastic, sometimes rude, and laid-back most of the time. Popular saying include "rat's ass" and "unbelievable". But he is shown to hold resentment to John for never properly being there for him, and was slow to warm up to his half siblings; he was surprised that they cared so much for him and that they tried to save him from Zachariah. Adam was more accepting of fate and destiny as he was very willing to say yes to Michael even knowing that his fight with Lucifer could be catastrophic, something not shared by his brothers. Adam has long hair on the back of his neck like Sam does, while he has short hair (exposing his forehead) like Dean does.