Comic Title: Batman #107
Publisher: DC (National Comics Publications, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: April 1957
Approx. On Sale Date: February 26, 1957 Copyright Date February 24, 1957
Source: Library of Congress, Periodicals 1957
Until 1958 DC did not report actual on sale dates to the copyright office
The publication dates listed in LoC records are NOT release dates.

Frequency: Monthly, with the exception of January, May, July, and November
Cover Price: $0.10
Page Count: 32
Editor: Jack Schiff

Title: "The Grown-Up Boy Wonder"
Pages: 8

Feature(s):
Batman (of Earth-1)

Writer: Bill Finger
Penciller: Sheldon Moldoff
Inker: Stan Kaye

Reprinted In:
Batman Annual #5 (1963)
Batman Annuals Vol. 2 HC (2010)
Robin, the Boy Wonder:A Celebration of 75 Years HC (2015)
Batman:The Silver Age Omnibus Vol. 1 HC (2023)

Feature Character(s)

• Batman (last appearance in Batman #107; next appearance in Detective Comics #242)

Supporting Character(s)

• Robin (becomes Owlman in this story; last appearance in Batman #107; next appearance in Detective Comics #242)

Villain(s)

• The Daredevils (a gang of criminal acrobats; no further appearances)
• Frankie the Fence (no further appearances)

Synopsis:
Batman and Robin guard an alien box given to them by Superman. When the box is accidentally opened, Robin is transformed into a man by a strange gas. He dons a new costume and becomes Owlman. Though his body is now that of an adult, Dick still makes childish mistakes. Eager to prove himself, Owlman tries to capture the Daredevils, a gang of criminal acrobats, himself. The crooks see his unmasked face before Batman rescues him. Working together, Batman and Owlman capture the crooks. The effects of the alien gas wear off, restoring Dick to normal. The crooks hope to recognize the man they saw unmasked, but since he is now a boy, their cause is hopeless.