An icon of the ’90s, Batman: The Animated Series (BTAS for short), is arguably one of the most influential and loved animated shows of all time. It debuted on Fox Kids in 1992, aiming to capture the dark and stylistic elements of the Tim Burton movies that captivated adults, while at the same time making the series watchable for children.

While BTAS gave us some of the best versions of Batman, Robin, and Batgirl put to screen, the series is most known for its fantastic use of the Dark Knight’s rogues gallery. The show gave us Mark Hamill’s legendary performance as the Joker, as well as introducing us to the iconic Harley Quinn, and giving us a fantastic new origin story for Mr. Freeze. Due to the dark, film noir style of the series and despite being on Fox Kids, some of these villains were outright terrifying.

This article will list the 10 scariest Batman: The Animated Series villains of all time.

Bane

Bane is one of the most infamous Batman villains due to the fact that he “broke the Bat.” In the legendary Knightfall story arc of the 1990s, Bane descended upon Gotham, hatched a plan to weaken the Caped Crusader, and then beat Batman to a pulp before breaking Batman’s back over his knee.

While BTAS didn’t allow Bane to break the Bat in the series, the show did give us, arguably, the best adaptation of Bane’s character so far, as well as the iconic image of Bane holding Batman above his head.

Killer Croc

This one may be slightly controversial due to Killer Croc’s treatment in the series. At first, the character was a mysterious and intimidating villain who was a match for Batman; however, as the series progressed Killer Croc started to become more of a punchline due to his limited intelligence.

That being said, there is no doubt that Killer Croc is still a terrifying villain. We certainly wouldn’t be laughing if he “threw a rock” at us.

H.A.R.D.A.C.

H.A.R.D.A.C. was another villain who made his debut in BTAS, leaving a mark on the wider Batman fan community in the process. The character first appeared in the two-part episode “Heart of Steel,” which focused around the supercomputer who wished to replace Gotham City residents with robotic replicants.

H.A.R.D.A.C. is scary, not only because the AI gives off Terminator vibes, but also because of his evil plan. It makes one think of classic horror movies like Invasion of the Body Snatchers.

Clayface

Clayface is a terrifying villain, not only because his powers are so strong, but also because of the tragic backstory of the character. It provides another element of horror that is a perfect example of just how strong and detailed the writing was behind BTAS.

It goes without saying that a character who can turn his arms into lethal weapons deserves to be on this list. Furthermore, Clayface’s shapeshifting ability also allows for a whole new avenue of horror.

Ra’s Al Ghul

Ra’s Al Ghul deserves to be on this list for one of two reasons. The first is that, when the character is first introduced, the imagery surrounding him is very unsettling, and certainly left a few young viewers disturbed; Ra’s Al Ghul is seen wearing a jackal head mask that, coupled with the soundtrack, is just plain creepy.

The second reason is that Ra’s Al Ghul is the head of an international organization that makes him an incredibly powerful and dangerous man (not to mention his unhinged state of mind after emerging from the Lazarus Pit).

Lloyd Ventrix

This one may come as a surprise to some as the character isn’t a particularly iconic villain in the series, but Lloyd Ventrix is an intensely creepy individual. His episode starts with a mystery, as we see a young girl being given jewelry by an unseen force. However, it is later revealed that he is the girl’s father, who has been ordered by law to stay away but has found an invisible suit that allows him to visit her.

The idea of an invisible man creeping around young children is a very disturbing thought indeed, and the voice actor behind Ventrix plays him perfectly.

Red Claw

Red Claw may be one of the most underrated BTAS villains. The character had several appearances throughout the show’s run, with the terrorist usually seen attempting to destroy Gotham with either nuclear warheads or some kind of chemical weapon.

In a similar vein to Ra’s Al Ghul, Red Claw is terrifying because of her power in an international organization, as well as her own personal and ruthless skill set.

Scarecrow

Naturally, this list wouldn’t be complete without the Master of Fear and Professor of Panic himself, the Scarecrow. This character had several redesigns throughout his run on the series, with the first being the most unsettling of them all (though his design in the New Batman Adventures is pure nightmare fuel).

The scariest thing about Scarecrow, however, is his fear toxin. The character is able to reduce someone to a shaking mess, forcing them to see their greatest fears.

The Joker

As in the case of Scarecrow, a list concerning the scariest Batman villains would not be complete without the Clown Prince of Crime himself, the Joker. BTAS is perhaps most well known for introducing the world to what some fans believe is the best portrayal of the Joker. The legendary Mark Hamill provided the iconic voice after Tim Curry was no longer able to lend his.

While the Joker is terrifying in general, the most unsettling and disturbing element of the Joker in BTAS was his use of the Joker toxin. This toxin caused the victim to laugh hysterically before then collapsing on the ground with a wide, unnatural smile across their face.

Mr. Freeze

BTAS deserves some immense credit for its treatment of Mr. Freeze. It was this series that gave the character his own tragic backstory, revealing that he was rendered cold after falling into a vat of chemicals while trying to find a cure for his wife’s terminal illness.

While the character certainly elicits sympathy, this does not make him any less terrifying. His unnerving and emotionless voice, coupled with his heartless method of attack, make him a terrifying foe.