Ace the Bat-Hound is a character from the Batman franchise. He is Bruce Wayne's pet dog and a member of the Bat Family, as well as one of the many pets of the Wayne family, along with Dick Grayson's dog, Haley, and Damian Wayne's cat, Alfred.
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Titans: Dick Grayson/Nightwing • Bruce Wayne/Batman • Jason Todd/Red Hood/Robin II • Tim Drake/Robin III • Barbara Gordon • Slade Wilson/Deathstroke • Jonathan Crane/Scarecrow
Arrowverse: Helena Bertinelli/Huntress • Batwoman (Ryan Wilder) •Kate Kane (Arrowverse) • Slade Wilson/Deathstroke
DC Extended Universe: Bruce Wayne/Batman • Superman • Aquaman • Wonder Woman • Harley Quinn • Huntress (Helena Bertinelli) • Slade Wilson/Deathstroke
DC Animated Movie Universe: Bruce Wayne/Batman • Dick Grayson/Nightwing • Damian Wayne/Robin II • Raven • Superman
Batman: The Brave and the Bold Series Batman, Aquaman, Jaime Reyes/Blue Beetle, Green Arrow, Black Orchid, Ambush Bug, Green Lantern (Guy Gardner)
Arrowverse: Slade Wilson (Arrowverse) • Talia al Ghul • Lex Luthor
Titans: Slade Wilson/Deathstroke • Mercy Graves • Scarecrow • Joker • Penguin • Mad Hatter
DC Extended Universe: Lex Luthor • Doomsday • Deathstroke (Slade Wilson) • Lex Luthor • Steppenwolf • Darkseid • Parademons
The Batman (2022): Bruce Wayne/Batman (2022) • Selina Kyle/Catwoman
Supporting characters: Helena Bertinelli • Misfit • Batman • Birds of Prey (Black Canary • Helena Bertinelli/Huntress • Gypsy • Hawkgirl • Lady Blackhawk • Dove • Big Barda) • Catwoman • James Gordon • Dick Grayson • Lucius Fox • Justice League • Alfred Pennyworth • Proxy • Harley Quinn • Tim Drake • Jason Todd • Damian Wayne • Supergirl • Leslie Thompkins • Alysia Yeoh • Renee Montoya
DC Extended Universe: Batgirl • James Gordon • Batman • Harley Quinn • Black Canary • Huntress • Joker • Suicide Squad
Alternate: Carrie Kelley/Robin III/Catgirl/Batgirl II/Batwoman, Duke Thomas/Robin/Lark/The Signal, Bruce Wayne Jr./Robin
Allies: Starfire • Raven • Beast Boy • Cyborg • Donna Troy • Cassie Sandsmark • Batgirl (Barbara Gordon/Batgirl • Cassandra Cain/Orphan) • Batwoman • Hawkfire • Clark Kent/Superman • Diana of Themyscira/Wonder Woman • Mary Grayson • John Grayson • Jack Drake • Janet Drake • Renee Montoya • Duke Thomas/Signal • Harleen Quinzel/Harley Quinn • Dinah Drake/Black Canary • Birds of Prey
2003 Animated Series: Robin • Starfire • Raven • Beast Boy • Cyborg • Terra • Batman
Titans: Dick Grayson/Robin I/Nightwing • Jason Todd/Robin II/Red Hood • Tim Drake/Robin III • Bruce Wayne/Batman • Barbara Gordon/Batgirl/Commissioner Gordon • Koriand'r/Starfire/Kory Anders • Rachel Roth/Raven • Gar Logan/Beast Boy • Donna Troy/Wonder Girl
DC Animated Movie Universe: Damian Wayne/Robin II • Dick Grayson/Robin I/Nightwing • Bruce Wayne/Batman, Kate Kane/Batwoman • Luke Fox/Batwing • Rachel Roth/Raven • Koriand'r/Starfire • Alfred Pennyworth • Batman Family • Teen Titans (Beast Boy • Cyborg • Superboy • Blue Beetle) • Justice League
Batman & Robin: Poison Ivy • Mr. Freeze • Bane • Snowy Cones Thugs • Golums • Jason Woodrue Batman vs. Robin: Court of Owls (Samantha Vanaver • Talon • Owls Lieutenant • & Talon Warriors) • Dollmaker
Teen Titans: Trigon • Slade
Titans: Slade Wilson/Deathstroke • Jonathan Crane/Scarecrow
Family: John Grayson • Mary Grayson • Mayor Melinda Zucco • Mar'i Grayson
Allies: Bruce Wayne/Batman • Alfred Pennyworth • Tim Drake/Red Robin • Jason Todd/Red Hood • Damian Wayne/Robin • Batgirl (Barbara Gordon • Cassandra Cain • Stephanie Brown) • Selina Kyle/Catwoman • Starfire • Donna Troy • Raven • Cyborg • Beast Boy • Kid Flash • Supergirl • Roy Harper/Speedy • Aqualad • Superman • Dinah Lance/Black Canary • Kate Kane • Bette Kane • Beth Kane/Red Alice • Batwing • Duke Thomas/Signal • Bluebird • Wonder Woman • Barry Allen/The Flash • Green Lantern (Hal Jordan • Jade) • Helena Bertinelli/Huntress • Superboy (Kon-El • Jon Kent) • John Henry Iron/Steel • Aquaman • Firestorm • Green Arrow • Hawkman • Hawkgirl • Zatanna • Rose Wilson/Ravager • Jericho • Bumblebee • Hawk and Dove • Ace the Bat-Hound • Harley Quinn • Renee Montoya
Villains: Alex Luthor, Black Mask • Blackfire • Blockbuster II • Brutale • Chemo • Clayface • Copperhead • Deathstroke • Doctor Sivana • Electrocutioner • Firefly • Francis Redhorn • Grimm • Joker • KGBeast • Killer Moth • Killer Croc • Lady Vic • League of Assassins • Lex Luthor • Monsoon • Nite-Wing • Penguin • Polka Dot Man • Punchline • Ra's al Ghul • Riddler • Scarecrow • Shriek • Talia al Ghul • Talon • Tarantula • The Trigger Twins • Tiger Shark • Tony Zucco • Two-Face • Lady Shiva • Superboy Prime • Scarecrow • Brainiac • Trigon • Hush • Firefly • Professor Pyg • Amazo • Mad Hatter • Victor Zsasz • Dr. Simon Hurt • Brother Blood • Doctor Light • Mr. Freeze • Court of Owls
The Batman: Dick Grayson • Barbara Gordon • Bruce Wayne • Oliver Queen • Kal-El/Clark Kent • Martian Manhunter
Titans: Barbara Gordon • Dick Grayson/Nightwing • Koriand'r • Rachel Roth • Gar Logan • Conner • Dove • Hawk • Rose Wilson • Jericho • Bruce Wayne • Deathstroke • Tim Drake • Jason Todd • Donna Troy
Teen Titans: Robin (Nightwing) • Raven • Starfire • Cyborg • Beast Boy • Aqualad • Kid Flash • Slade • Terra • Jericho • Doom Patrol (Elasti-Girl • Negative Man • Mento • Robot Man) • Robin/Red X
Young Justice: Orphan • Robin • Jason Todd • Damian Wayne • Stephanie Brown • Barbara Gordon