Alec Holland

Alec Holland is an individual known by John Constantine.

Biography
Alec Holland was an individual who lived in "The Bloody Swamp" according to John Constantine. People would often try to contact Holland, but would get through to Constantine instead.

Trivia

 * In the comics, Alec Holland was known as the Swamp Thing: a mutated humanoid plant creature who tasks himself with protecting The Green, an elemental force which connects all plant life on planet earth.
 * Holland's only appearance in the Arrowverse is a 2014 promotion from NBC, giving out the phone number of John Constantine. When called, the answer message from John stating "Hello, you've reached John Constantine. And that's John Constantine. If you're looking for Alec Holland, try the bloody swamp." A reference to Holland's role as the Swamp Thing.