Scarecrow

The "Scarecrow" was an individual who lived on Earth-Prime.

Biography
In 2020, Luke Fox referred to an Incident where the Scarecrow was involved where he attempted to hack the internal computers on the Gotham City's trains. This incident caused Gotham trains to be modified to run on an "independent analog system."

Behind the scenes

 * In the main DC Comics continuity, The [[w:c:dc:Scarecrow|Scarecrow] is a super-villian enemy of Batman, named Jonathan Crane, who commits crimes using fear toxin to pray on people's fears.
 * It is unknown if the Arkham Asylum patient J. Crane and the unnamed Scarecrow are the Arrowverse's version of the Scarecrow.