Batman: The Animated Series, Season One

Dr. Kirk Langstrom:
[enters laboratory upon hearing noises] Who's back there? [Spots Batman] You!

Batman:
I'm looking for Dr. March.

Dr. Kirk Langstrom He's not here, Batman.

Batman:
Where is he?

Dr. Kirk Langstrom:
Giving a lecture on human extinction and bat evolution, he's really quite brilliant.

Batman:
He's misguided, and a thief. [Holds up a vial of the serum]

Dr. Kirk Langstrom:
He's just a theorist, he was afraid to put it to the test. But I wasn't. I knew he'd discovered a formula to create a totally new species, neither man nor bat. And once I started taking it, I couldn't stop. I desperately wanted to, but it took over. Francine and March tried to protect me, but it was too late. The beast knew what chemicals were needed to bring itself about! It was out of my control! And it only needs one more component to complete the process - [voice lowering] it's in ME, Batman! [Laughs maniacally and begins to change into Man-Bat]