Title: Mad Hatter (DC Comics)
Content:  group of cloned rogue Batmen. ; The impostor Mad Hatter makes a cameo appearance in the 2018 crossover film Scooby-Doo! & Batman: The Brave and the Bold. ; Mad Hatter appears in the 2021 two-part animated film Batman: The Long Halloween, voiced by John DiMaggio. He and Scarecrow are hired to rob banks for Carmine Falcone, but are ultimately defeated by Batman and returned to Arkham Asylum. Solomon Grundy and Two-Face later free Arkham's supervillain inmates to help the latter get his revenge on Falcone, with Hatter, Scarecrow and Poison Ivy causing havoc in Gotham to distract the GCPD. In the final battle, Hatter is once again defeated by Batman. 
Title: Mad Hatter (DC Comics)
Content:  The Mad Hatter (Jervis Tetch) is a supervillain appearing in comic books published by DC Comics, commonly as an adversary of the superhero Batman. He is modeled after the Hatter from Lewis Carroll's novel Alice's Adventures in Wonderland, a character often called the "Mad Hatter" in adaptations of Carroll. Mad Hatter is depicted as a scientist who invents and uses technological mind control devices to influence and manipulate the minds of his victims. He is one of Batman's most enduring enemies and belongs to the collective of adversaries that make up Batman's rogues gallery. The Mad Hatter has been substantially adapted from the comics into various forms of media, including feature films, television series, and video games. He has been voiced by Roddy McDowall in the DC animated universe, and Peter MacNicol in the Batman: Arkham video game series. He has also been portrayed in live-action by David Wayne in the 1960s Batman series, and Benedict Samuel in the Fox series Gotham. A variation of the character named Liam Crandle appeared in the third season premiere of the Arrowverse series Batwoman, portrayed by Amitai Marmorstein.
Title: Mad Hatter (DC Comics)
Content: The Jervis Tetch incarnation of the Mad Hatter appears in The Batman/Superman Hour episode "A Mad, Mad Tea Party", voiced by Ted Knight. This version has trained white rabbits, a top-hat-shaped getaway car, and henchmen dressed as various Wonderland characters. The Jervis Tetch incarnation of the Mad Hatter appears in series set in the DC Animated Universe, voiced by Roddy McDowall. This version is depicted as an English, average-sized man with blonde hair and a large overbite which displays a Cheshire Cat-like smile. ; Introduced in the Batman: The Animated Series episode "Mad as a Hatter", the shy and kind Tetch is a technical 
Title: Batman (TV series)
Content:  Batman. One affiliate refused to air the series. The network insisted it needed the extra advertising revenue. The Joker, the Penguin, the Riddler, Catwoman, Mr. Freeze, and the Mad Hatter, villains who originated in the comic books, all appeared in the series, the plots for which were deliberately villain-driven. According to the producers, Frank Gorshin was selected to portray Riddler due to the fact that he was a Batman fan since childhood. Catwoman was portrayed by three different actresses during the series run: by Julie Newmar in the first two seasons, by Lee Meriwether in the feature film based on the series, and by Eartha Kitt in the third and final season. The show was extraordinarily popular, and was considered "the biggest TV phenomenon of the mid-1960s".
Title: Mad Hatter (DC Comics)
Content: The Mad Hatter was considered by Mark Protosevich to be the main antagonist of Batman Unchained, the unproduced third Joel Schumacher Batman film, but was dropped in favor of the Scarecrow and Harley Quinn. ; The Jervis Tetch incarnation of the Mad Hatter appears in the animated film Batman: Bad Blood, voiced by Robin Atkin Downes. This version is one of Talia al Ghul's henchmen and is working for the League of Assassins who turned Heretic, a clone of Damian Wayne, into the perfect soldier for the League. After Heretic captures Batman, Tetch reprograms his mind to follow Talia's orders and reveal his and his allies' secrets. After Batman helps 
Title: Mad Hatter (DC Comics)
Content: A variation of the Mad Hatter appears in the 1960s Batman series, portrayed by David Wayne. While this version is referred to as Jervis Tetch, his appearance is based on the imposter Mad Hatter as the series was produced before he was revealed as such. Additionally, he wears a trick top hat containing a set of mechanical eyes capable of firing hypnotic beams that render victims unconscious and is obsessed with hats, particularly Batman's cowl. In the episodes "The Thirteenth Hat" and "Batman Stands Pat", Tetch and his accomplice Lisa kidnap the jurors who had previously incarcerated him along with their hats. They also seek Batman and his cowl, only to be defeated by the 
Title: Batwoman (season 3)
Content: Amitai Marmorstein as Liam Crandle / Mad Hatter II ; Sharon Taylor as Mayor Hartley ; Heidi Ben as Steven / Killer Croc II ; Alistair Abell as Mason ; Nevis Unipan as Whitney Hutchison ; Jennifer Cheon Garcia as Head Mercenary ; June B. Wilde as Dee Smithy ; Jennifer Higgin as Nora Fries ; Keeya King as Jordan Moore ; Tom Lenk as Charlie Clark ; Josh Blacker as Virgil Getty ; Rob Nagle as Lazlo Valentin / Professor Pyg 
Title: Batwoman (season 1)
Content: Greyston Holt as Tyler ; Brendon Zub as Chuck Dodgson ; Rachel Maddow as the voice of Vesper Fairchild ; Gabriel Mann as Tommy Elliot / Hush ; Brianne Howey as Reagan ; Christina Wolfe as Julia Pennyworth ; Sam Littlefield as Jonathan Cartwright / Mouse ; Rachel Matthews as Margaret "Margot"/ Magpie ; John Emmet Tracy as August Cartwright ; Sebastian Roché as Ethan Campbell ; Michelle Morgan as Gabrielle Kane ; Cameron McDonald as Jack Forbes ; Malia Pyles as Parker Torres 
Title: Mad Hatter (DC Comics)
Content: The Mad Hatter appears as a boss in The Adventures of Batman & Robin for the Sega Genesis. He takes over the Gotham Theatre, turns it into a surreal virtual Wonderland, and commands an army of robots based on characters from Alice in Wonderland. While his appearance is based on that of the Batman: The Animated Series version, he also sports elongated eyelashes on his left eye similarly to Alex DeLarge from the film A Clockwork Orange. ; The Mad Hatter appears in DC Universe Online, voiced by Aaron Mace. ; The Mad Hatter appears in Scribblenauts Unmasked: A DC Comics Adventure. 
Title: Mad Hatter (DC Comics)
Content:  with a radioactive substance. Batman then went to nuclear lab and as he was preparing to leave, he set off the radiation detectors. He then had to remove it and handed it to one of Mad Hatter's henchmen who was disguised as one of the lab workers. No sooner did the Mad Hatter put it in his collection than Batman and Robin arrived. They had traced the cowl with their "super sensitive Geiger counter" in the Batplane. Later on, in Batman #297 (March 1978), the impostor Mad Hatter claimed to have gone straight, but that turned out to be a lie. In 1981, it was revealed that he was in fact an impostor when the real Jervis Tetch returned. 

Question: who played the mad hatter in the batman tv show?
Answer: Roddy McDowall.
David Wayne.
Benedict Samuel.