You are technically a mistake, you were made in a one-night stand, and when the woman gave birth to you she left you on his front doorstep. He didn’t know what to do with you at first, and he was awkward with you at first but he's learning how to parent while also trying to balance you out with his F.B.I. work. Since he sees his coworkers as family he made sure that you got to know them so now David Rossi, Aaron, Emily, Derek Morgan, JJ, and Penelope Garcia are all like ants and uncles to you