10 Actors Who Appeared In Star Trek AND Batman: The Animated Series
Wouldn't a mash-up of the theme tunes be great? To Boldly Go - where no Bat has gone before!

If, like me, you were a child growing up in the '90s, then you were lucky. The calibre of Saturday morning cartoons was on par with the '80s, with neither having been equalled since. Amid this golden era of cartoon programming came what is still arguably the best iteration of a certain Dark Knight - Batman: The Animated Series.
The series debuted in September 1992, capitalising on the then-showing Batman Returns; it met with enormous acclaim from new and old fans. It spawned several spin-off films, with Batman: Mask Of The Phantasm receiving a theatrical release.
Many Star Trek alum lent their voices to the production, from its earliest days to its final seasons. Batman: The Animated Series, as well as a certain other animated show that will be explored on another list, provided a fresh stomping ground for many of Trek's most recognisable names and even more recognisable voices in the '90s.
How many of these names made you suddenly go - 'Oh! That's who that was!'
10. Brock Peters - Lucius Fox

For Star Trek fans, Brock Peters needs little introduction. He first appeared in Star Trek IV: The Voyage Home as Admiral Cartwright, the (then) upstanding Starfleet commander. His return in the sixth film flipped the script on his (b)admiral, though he stole hearts as Joseph Sisko in Deep Space Nine.
In Batman, he voiced Lucius Fox, then CEO of Wayne Enterprises. Though fans more familiar with Christopher Nolan's trilogy may assume Fox was always aware of Bruce Wayne's double life, Peters' version didn't present any certain knowledge of what his employer gets up to at night.
Peters' brought a gravitas to the role, appearing in eight episodes of the show.
9. Diana Muldaur - Dr. Leslie Thompkins

Dr Leslie Thompkins is one of the few characters who knows Batman's true identity, securing Bruce Wayne's trust in his childhood, having comforted him when his parents were murdered. Diana Muldaur is of course famous to Star Trek fans as the professional, if stern, Dr Pulaski in The Next Generation's second season.
She appeared in five episodes of Batman: The Animated Series, often serving as a Florence Nightingale-inspired character to the residents of Crime Alley, otherwise known as Park Row. Though the neighbourhood had deteriorated in the years following the Waynes' murders, she remained behind to support the struggling community.
She was crucial in helping Batman adapt when he lost his sight, following an attack by the Penguin's henchmen, forming a sort-of full circle moment when one considers Dr Miranda Jones, the blind character Muldaur played in Is There In Truth No Beauty? Whether appearing in Batman or in Star Trek, Muldaur seems destined to play kind, compassionate healers, animated or not.
8. Michael Ansara - Mr. Freeze

Batman: The Animated Series was transformative for Mr. Freeze. He had been a somewhat hokey, gimmicky villain, using his freeze-ray to commit petty crimes. He could be easily defeated if, as Adam West's Batman did in the '60s show, one simply remembered to wear their bat-thermal underwear.
When Michael Ansara, who played Kang in The Original Series, Deep Space Nine, and Voyager, took on the role of the icicle-themed foe, Mr. Freeze went from a silly background character to the most tragic villain in Batman's gallery of enemies.
Gone were the ice-puns (Batman & Robin had yet to release), and here was a man trying desperately to save his wife from a terminal illness. Freezing her seemed the only way to save her, and with this change in character, writer Paul Dini delivered a version of the villain who was both sympathetic and deadly.
Ansara's performance lends that cold, impassive quality of Kang to the cold, controlled Victor Fries. Heart Of Ice won a Daytime Emmy for its writing.
7. René Auberjonois - Dr. Robert March

René Auberjonois appeared in two episodes of Batman: The Animated Series as Dr Robert March, though this was far from his only DC or Batman-related role. He had previously appeared (and would later reprise) in the role of DeSaad in Super Friends and Justice League, and he also boasts a live-action appearance in Batman Forever, as Dr Burton.
He also voiced and sang in Disney's The Little Mermaid before appearing in either Batman: The Animated Series or in Star Trek. He first appeared in the latter as Colonel West, a role that was cut from the theatrical version of Star Trek VI: The Undiscovered Country.
He is, of course, most famous for his grumbling Constable Odo, appearing in Deep Space Nine for its entire run. Though it was this role that would win the hearts of Star Trek fans, it was not his final role in Trek. He guest-starred in the episode Oasis of Star Trek: Enterprise, playing Ezral opposite another future-Trek alum, Annie Wersching.
6. Matt Hagen/Clayface - Ron Perlman

Ron Perlman appeared as the tragic villain Matt Hagen, better known as Clayface, in Batman: The Animated Series. The character was introduced in Feat Of Clay, an early two-parter that demonstrated the series' ability to depict heightened reality alongside the absurd.
Perlman returned to voice Clayface and would also voice other characters in the DCAU, including the New God Orion in the Justice League series.
Perlman's voice carried over into Star Trek (as did the rest of him) though the actor was hidden under a fair amount of rubber and latex. He played the Reman Viceroy in Star Trek: Nemesis, an imposing character based physically on Nosferatu, one who wasn't above a bit of mind-abuse. He also is currently the only character to know whether that chasm at the bottom of the Enterprise-E really is endless.
5. David Warner - Ra's Al Ghul

David Warner, though having appeared as several characters in Star Trek on-screen, is perhaps best known for his distinctive timbre. Though physically slight, he could raise the hairs on the back of your neck from three rooms away, generally with few words.
He appeared as Ra's Al Ghul in Batman: The Animated Series, reprising the role in both Superman: The Animated Series and Batman Beyond. As the 'Demon's Head,' he is one of the few rogues fully aware of Batman's secret identity, adding an extra layer to their relationship. He appeared in four episodes of The Animated Series.
In Star Trek, he first appeared in Star Trek V, though he returned as Chancellor Gorkon in the subsequent film. He may be best remembered for his 1984-inspired Gul Madred, acting in a last-minute tour-de-force opposite fellow Royal Shakespeare Company alum Patrick Stewart.
4. Kate Mulgrew - Red Claw

Kate Mulgrew may be familiar to some of you - she did have a small role in Star Trek: Voyager, after all.
Ok, time to hide from Ellie!
Star Trek's first leading female captain helped to open Batman: The Animated Series with her depiction of Red Claw, a terrorist leader who had beef with Selina Kyle/Catwoman. The Cat And The Claw Part 1 was the first episode of the show to be broadcast, even though it had been produced after many priors.
Red Claw's plans saw her procuring a large amount of land that Kyle wanted for animal preserves - thus leading to their confrontation, and later with Batman as well. Mulgrew gets to chew the scenery as Claw matches Batman punch-for-punch. She returned for The Cat And The Claw Part 2, then later again for The Lion And The Unicorn.
As Claw's fate is uncertain by the end of that episode, there is every chance a future series could see Mulgrew return to the role - something she has already done for another well-known character she played in Star Trek: Prodigy.
3. Nichelle Nichols - Thoth Khepera

Thoth Khepera wasn't really very nice when one gets down to it. She was an ancient Egyptian queen, surviving for millennia thanks to her Lazarus Pit. Ra's Al Ghul sought her out, hungrily wanting her knowledge for himself. He bit off a little more than he could chew and would likely have died as a result, were it not for his daughter and a certain bat-themed vigilante.
Khepera, in being a queen, needed someone with a regal vocal range to play her. Who better than Nichelle Nichols, crossing over from her iconic role as Nyota Uhura? Avatar, the eighth episode of the second season, was closer to a horror story than an adventure. Khepera's true appearance was gaunt, evil, and deadly.
Batman traps the villain, but he doesn't kill her. It's been roughly thirty years since the episode aired, but what is thirty years to an immortal being?
2. LeVar Burton - Hayden Sloan

Batman: The Animated Series's second season saw the return of Jervis Tetch/The Mad Hatter in The Worry Men. This story featured the villain attempting to rob various wealthy Gothamites by using little mind-control dolls, presented as gifts, inspiring them to 'donate' some of their cash and jewels.
LeVar Burton appears as Hayden Sloan, an investment portfolio manager. He was arrested by the GCPD after seemingly embezzling money from his own company. He was quickly exonerated when Batman discovered the Hatter's involvement.
Burton was already a household name by 1993. He was the ever-brilliant, if unlucky in love, chief engineer Geordi LaForge in The Next Generation. His years on Reading Rainbow also helped younger audiences know him, while his breakout role was that of Kunte Kinte in Roots.
1. Jeffrey Combs - Scarecrow

Scarecrow went through a couple of different iterations during Batman: The Animated Series' run. Though this version is technically from The New Batman Adventures, there is no doubt in our minds that Jeffrey Combs brought real terror to the fear-inspired villain.
This version of the character moved away from the Wizard of Oz style Scarecrow of previous episodes to a Children Of The Corn mad preacher image. With a hangman's noose around his neck, a flat dark cap, and a stick that can take down the Batman, this villain was eerily at home in the shadows. Never Fear sees Scarecrow's new plan - removing people's fear entirely rather than creating it - affect Bruce, Batman, and the people of Gotham.
In Star Trek, Jeffrey Combs has a long-standing reputation as a chameleon. He is one of several actors who have played eight or more roles in the franchise, most often as villains. If there is one thing that Combs can do well (and he can do many things well), it is to use that cool, chilling voice to great effect.