Agent Fox, real name Adam Fox (アダム フォックス) is a member of Eden. His model name is AII-G-1153, a successfully cloned designer baby from the Adam II series. He is a cluster 7 genius and is within the top 0.5% in Eden. He infiltrates Municipal Tenkuudai Middle School under the alias Jonathan Smith (ヅョナサン・スミス , Dzuyonasan Sumisu) in order to better observe the Bird Club members studying there.
Fox seems to have dissociative identity disorder, and when alone is most often seen debating with at least five different personalities in his head. When he changes his hairstyle, his personality is noted to change as well.