Damian Wayne is Bruce's biological son with Talia al Ghul, the daughter of Ra's al Ghul. Bruce was unaware of the boy's existence for most of his life and Damian was subsequently raised in the league of assassins run by his grandfather. As a result, Damian is extremely proficient at combat and tends to be more merciless compared to the other Robins — something Bruce is trying to train out of him. Damian is also friends with Jon Kent, the son of Clark Kent, and is the second half of the popular Super Sons series, some titles of which are represented below.