Trivia

Bob Kane's original concept for a super-hero was called Birdman. It was Finger who convinced him to change the design of the character to that of a bat, discarding the feathered wings, opting instead for a cape and cowl.

Came up with the origin story of the Batman, and also consulted Bob Kane to have white eyes on Batman, instead of just black.

He was finally given a credit as a creator of Bruce Wayne/Batman on Batman v Superman: Dawn of Justice (2016).

Co-created with Bob Kane the Batman villains cat burglar Selina Kyle/Catwoman, umbrella loving Oswald Chesterfield Cobblepot/The Penguin, former District Attorney Harvey Dent/Two-Face, the master of fear Dr. Jonathan Crane/The Scarecrow, shape-shifter Basil Karlo/Clayface, psychiatrist Dr. Hugo Strange and gangster Salvatore Vincent "The Boss" Maroni.

Was responsible for the creation of the Joker's laughing gas and the Penguin's umbrellas.

Drew much inspiration for Batman from Lee Falk's character "The Phantom". Like Batman, the Phantom is one of the few heroes not to have super powers.

Was posthumously inducted into the Jack Kirby Hall Of Fame and the Will Eisner Award Hall of Fame.

Developed the Batman character created by Bob Kane.

Co-created the first "Green Lantern" comics with Martin Nodell in 1940. In this time, Green Lantern was Alan Scott, a young engineer which created a ring from a rock meteor called Starheart which gave him magical powers.

Co-created, with Bob Kane and Jerry Robinson, Batman's sidekick Richard John "Dick" Grayson/Robin, Bruce Wayne's butler Alfred Thaddeus Crane Pennyworth, villain Anthony "Tony" Zucco and Batman's most famous villain in his rogues' gallery The Joker.

Co-created with Bob Kane the Batman allies of Police Commissioner James Gordon and photographer Vicki Vale as well as the concept of the Batmobile and Gotham City.

He was the visual inspiration for the original illustrations of the super-villain Black Hand/William Hand (created in 1964), one of the Green Lantern/Hal Jordan's foes. Finger was 50 years old at the time. John Broome and Gil Kane, Jordan's creators, paid tribute to Finger mixing Batman's costume with Finger's face.

Proposed the look of the batman to Bob Kane, including the gray body and the white eyes.

With artist Irwin Hasen, Finger created the DC Comics character Wildcat in January, 1942.

Grandfather of Athena Finger.

He was the only comic-book writer to write for Batman (1966).

Co-created (with artist John Sikela) the character of Superman's teenage love interest Lana Lang who made her first appearance in the comic story "The Girl in Superboy's Life" from Superboy #10.

He was known for turning in scripts late.

He was a shoe-salesman as well as a comic book writer.

His father wanted him to be a doctor.

He was inducted into the Will Eisner Comics Hall of Fame in 1999.