Comic Title: Action Comics #390
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: July 1970
On Sale Date: May 28, 1970 Copyright Date May 28, 1970
Source: Library of Congress, Periodicals 1970

Frequency: Monthly
Cover Price: $0.15
Page Count: 32
Editor: Mort Weisinger

Title: "The Tyrant and the Traitor"
Pages: 12

Feature(s):
Legion of Super-Heroes (of Earth-1)

Writer: E. Nelson Bridwell
Penciller: J. Winslow Mortimer
Inker: Jack Abel

Reprinted In:
Legion of Super-Heroes Archives Vol. 9 HC (2000)
Showcase Presents:Legion of Super-Heroes Vol. 4 TPB (2010)
Legion of Super-Heroes:The Silver Age Omnibus Vol. 3 HC (2020)

Feature Character(s)

• Legion of Super-Heroes (last appearance in Action Comics #389; next appearance in Action Comics #391)
• Saturn Girl (last appearance in Action Comics #386; next appearance in Action Comics #391)
• Chameleon Boy (last appearance in Action Comics #383; next appearance in Action Comics #391)
• Brainiac 5 (last appearance in Action Comics #387; next appearance in Action Comics #391)
• Element Lad (last appearance in Action Comics #387; next appearance in Action Comics #391)
• Timber Wolf (last appearance in Action Comics #387; next appearance in Action Comics #391)
• Karate Kid (last appearance in Action Comics #387; next appearance in Action Comics #391)

Supporting Character(s)

• Proty II (last appearance in Action Comics #387; next appearance in Legion of Super-Heroes #300)

Villain(s)

• Dark Circle (last appearance in Adventure Comics #367; next appearance in Action Comics #391)
• Peralla (President of the planet Lahum; next appearance in Action Comics #391)
• Diol Masrin (a revolutionary leader; next appearance in Action Comics #391)
• A humanoid army (next appearance in Action Comics #391)
• A crew of gun runners (no further appearances)
• Chavak (Masrin's lieutenant; no further appearances)
• Wanpar (chief of scientific development on Lahum; next appearance in Action Comics #391)
• Marli Zhorg (Wanpar's assistant and former classmate of Saturn Girl; next appearance in Action Comics #391)

Other Character(s)

• A representative from the United Planets (no further appearances)
• Nym Belev and other members of Masrin's revolutionary forces (next appearance in Action Comics #391)
• Yroa (Chavak's girlfriend; next appearance in Action Comics #391)

Comments:
This story continues in Action Comics #391.

Synopsis:
Chameleon Boy puts together a team of Legionnaires for an undercover mission on the planet Lahum. The planet was recently taken over by the dictator Peralla. The United Planets wants Peralla overthrown. However, the leader of the local revolutionaries in Diol Masrin, who is secretly allied with the Dark Circle. Chameleon Boy and his team infiltrate Masrin's camp, while Saturn Girl takes a job as an assistant to Peralla's chief of scientific development.