52 In Batman and Robin Vol. 1: Born to Kill, as part of The New 52 (a 2011 reboot of the DC Comics universe), Bruce is seen purchasing a black Great Dane from a kennel. He later gives this dog to his son, Damian, who names him Titus. Damian rejects the dog at first, but eventually bonds with him. Writer Peter Tomasi revealed that he thought about naming Damian's dog Ace, but "it was best not to drop [Ace] in at this point in the New 52". DC Rebirth In DC Rebirth, a different Ace was introduced in Batman vol. 3 Annual #1, in which he is depicted as a former guard dog of the Joker who fought Batman until Joker left him and the other dogs without food in a ditch to fight amongst themselves. The dogs had card symbols on them, and the brown dog with an ace on it killed the others. He was sent to the Gotham Pound, and Alfred adopted him two days later. In order to facilitate this, Alfred actually purchases the Gotham Pound, turning it into the Martha and Thomas Wayne Humane Society. Alfred spends the next couple of months training the dog despite Bruce's objections, as he thinks Ace's wounds from the Joker's actions cannot be healed. Despite this, Alfred manages to properly train him in time for Christmas, and Bruce starts bonding with the dog after getting injured during one of his night shifts. He gets Ace a bat-mask for Christmas and calls him a "Bat Hound". Though the Gotham Pound owner described Ace as a female, Bruce and Alfred have called Ace a him, leaving the gender ambiguous. Ace is seen later, playing with visitors. He again obeys Alfred without question. Titus is seen as a pet living in Wayne Manor. It alerts Alfred of Duke Thomas's sneaking out. Titus and Ace are later shown sleeping in twin baskets, confirming that both dogs now exist in the same continuity. Ace is seen following Bruce Wayne around the manor after he has a difficult night out. Much like the TV show Batman Beyond, a Great Dane named Ace is shown to have been owned by Bruce in his old age. Other versions In Mark Waid's and Alex Ross's Kingdom Come miniseries, Ace is portrayed as the giant winged steed of the Fourth World Batwoman. Ace is also mentioned in Howard Chaykin's