The Scarecrow (real name Jonathan Crane) is an enemy of Batman.
Scarecrow is a brilliant psychologist turned super-villain who fights Batman in Gotham City, specializing in techniques and chemicals that manipulate fear. Jonathan Crane was originally a well-respected professor, although he lost credibility when he obsessively took his experiments too far and descended into madness. He spends most of his time in Arkham Asylum and has been a member of the Injustice League, Injustice Gang, Secret Society of Super-Villains and the Sinestro Corps. Scarecrow was created by Bill Finger and Bob Kane, first appearing in World's Finest #3 (1941).
Scarecrow's first Hanna-Barbera appearances were as a member of the Legion of Doom on Challenge of the Superfriends, where he was voiced by Don Messick. He later appeared in "The Fear", an episode of The Super Powers Team: Galactic Guardians.
- Jonathan Crane (Earth-One) at the DC Comics Database Wiki