Comic Title: Adventure Comics #269
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: February 1960
On Sale Date: December 31, 1959 Newsstand Date December 31, 1959
Source: House Ad, Superman's Girl Friend Lois Lane #15, Page 21

Copyright Date December 31, 1959
Source: Library of Congress, Periodicals 1960

Frequency: Monthly
Cover Price: $0.10
Page Count: 32
Editor: Mort Weisinger

Title: "Krypto's Mean Master"
Pages: 12

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

Writer: Jerry Siegel
Artist: George Papp

Reprinted In:
Superman Family #169 (1975)

Feature Character(s)

• Superboy (last appearance in Adventure Comics #268; next appearance in Superboy #79)

Supporting Character(s)

• Jonathan Kent (last appearance in Adventure Comics #268; next appearance in Superboy #79)
• Martha Kent (last appearance in Adventure Comics #268; next appearance in Superboy #79)
• Krypto (last appearance in Adventure Comics #268; next appearance in Superboy #80)

Villain(s)

• Solar Boy (no further appearances)

Synopsis:
Superboy punishes Krypto for pulling super-pranks. He sends his dog to the moon. Krypto decides to explore space instead where he meets another boy, Solar Boy. At first Solar Boy is nice and lets Krypto play all the pranks he wants, so Krypto decides to make Solar Boy his new master.

Later, Solar Boy uses a machine that gives him super powers. He uses the same machine to remove Krypto’s powers for a day. The boy is cruel to Krypto and teases him. The boy uses his machine on Krypto each day to keep Krypto powerless, so he can’t escape.

Krypto finally manages to make the machine malfunction. Krypto’s powers return and he destroys the machine permanently. He leaves Solar Boy behind and returns to Earth to make up with his master, Superboy.