Comic Title: Superman #152
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: April 1962
On Sale Date: February 6, 1962 Newsstand Date February 6, 1962
Source: House Ad, Action Comics #286, Page 17

Copyright Date February 6, 1962
Source: Library of Congress, Periodicals 1962

Frequency: Monthly, with the exception of March, June, Sept. and Dec.
Cover Price: $0.12
Page Count: 32
Editor: Mort Weisinger

Title: "The Robot Master"
Pages: 9

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

Writer: Jerry Siegel
Penciller: Curt Swan
Inker: George Klein

Reprinted In:
Showcase Presents Superman Vol. 3 TPB (2007)

Feature Character(s)

• Superman (last appearance in Justice League of America #11; next appearance in Superman #152)

Guest Star(s)

• Legion of Super-Heroes (last appearance in Adventure Comics #293; next appearance in Adventure Comics #301)
• Cosmic Boy (last appearance in Adventure Comics #293; next appearance in Adventure Comics #301)
• Saturn Girl (last appearance in Adventure Comics #293; next appearance in Adventure Comics #301)
• Lightning Lad (last appearance in Adventure Comics #293; next appearance in Adventure Comics #301)
• Chameleon Boy (last appearance in Superboy #93; next appearance in Adventure Comics #301)
• Brainiac 5 (last appearance in Action Comics #285; next appearance in Action Comics #287)
• Sun Boy (last appearance in Adventure Comics #290; next appearance in Adventure Comics #301)

Guest Appearance(s)

• Supergirl (last appearance in Action Comics #286; next appearance in Superman's Pal, Jimmy Olsen #60)
• Fred Danvers (last appearance in Action Comics #286; next appearance in Action Comics #287)
• Edna Danvers (last appearance in Action Comics #286; next appearance in Action Comics #287)

Other Character(s)

• Robots of Lois Lane, Clark Kent, Jimmy Olsen, and Perry White (created by the Legion; no further appearances)

Cameo Appearance(s)

• Jor-El (as a statue in the Fortress of Solitude)
• Lara (as a statue in the Fortress of Solitude)
• Lois Lane (as a statue in the Fortress of Solitude)
• Perry White (as a statue in the Fortress of Solitude)
• Jimmy Olsen (as a statue in the Fortress of Solitude)

Comments:
Bouncing Boy, who does not appear in this story, joins the Legion of Super-Heroes shortly after this story, as seen in flashback in the first story of Adventure Comics #301.

Synopsis:
Superman discovers that his best friends have all been replaced by robots, creations of "The Robot Master." Together with Supergirl, he takes the mechanical imposters to the Fortress of Solitude for investigation, where he learns that the "Robot Master" is a hoax perpetrated by the Legion of Super-Heroes as part of a celebration of the anniversary of Supergirl’s arrival on Earth. Inside the robots are concealed special commemorative busts of the Legionnaires.