|Species:||Dog (Great Dane mix)|
|Relatives:|| Bruce Wayne (owner, "master"),|
Terry McGinnis ("master")
|Voiced by:||Frank Welker|
In his puppy days, Ace lived in a pound, until he was sold by a corrupt attendant to Ronny Boxer, a man who forced dogs to fight one another for the amusement of paying crowds. Boxer recognized a certain potential in the young dog, and planned to train him to grow up "mean" -- a fighter. Ace was defiant towards his new master, but ended up leading an abused, violent life in Boxer's dog-fighting ring.
One winter night, when Ace was fully grown, the police busted Boxer's game just before his first fight would have begun. Ace was freed from his former master, but also fled from the police when they tried to catch him. He wandered the streets of Gotham for a while, and soon encountered Bruce, a fellow tormented soul, who was making his yearly pilgrimage to the spot where his parents died. When a member of the Jokerz gang tried to mug Bruce, Ace helped fight him off, but was injured during the skirmish. Wayne saved him and brought the dog to his home.
Ace went on to become Bruce's constant companion, as well as something of a guard dog. Young Terry McGinnis, Wayne's assistant and protege, seemed to be the only other person with whom Ace ever connected (eventually).
Although Ace typically did not accompany his guardians into the field, the dog was often an asset when he did. For instance, his species' acute sense of hearing and smell and fighting experience were considerable assets. Furthermore, he was extremely strong for his species, capable of throwing a man a considerable distance with his mouth even with poor leverage, able to bite through an electrified manacle with ease, and even managed to stand up (albeit barely) after being electrocuted by Joker's buzzer, which has been known to knock out grown men with a simple touch. 
Background information Edit
Ace is a homage to Ace the Bat-hound from DC Comics.
- "Dead Man's Hand"
- "The Winning Edge"
- "Mind Games"
- "The Last Resort"
- "The Eggbaby"
- "April Moon"
- "Ace in the Hole"
- "Out of the Past"