10 Darkest Endings In The DC Animated Universe

6. Clayface's Escape - Batman: The Animated Series

One of the best arcs in BTAS, Feat of Clay saw the introduction of Clayface and wasted no time at all in placing body horror front and centre. There's that awful bit where Matt Hagen gets the chemical mixture forcibly poured down his throat, and then of course the climax where the actor-turned-Clayface ends up reliving all his most famous roles in one fluid transformation.

It's a spectacular feat of animation, but it isn't the final note the episode ends on. Nope, the fine minds behind BTAS had one last horrifying surprise in store - after they'd finished luring everyone into a false sense of security, of course.

At the end of the episode, after Batman's defeated Clayface and it seems as though he's dead, we discover that Hagen has survived, as electricity actually has no adverse effect on his new form.

Immediately after Batman runs his tests on the sample, we see Clayface's friend Teddy mourning his death, while a woman watches in the background. The woman begins to laugh uncontrollably, as the pitch descends to a horrifying cackle, and her eyes turn Clayface yellow.