Comic Title: Challengers of the Unknown #49
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Apr/May 1966
On Sale Date: February 1, 1966 Newsstand Date February 1, 1966
Source: Direct Currents, Batman #179, Page 17

Copyright Date February 1, 1966
Source: Library of Congress, Periodicals 1966

Newsstand Date January 1, 1966
Source: House Ad, Adventure Comics #342, Page 20

Frequency: Bi-monthly
Cover Price: $0.12
Page Count: 32
Editor: Murray Boltinoff

Title: "The Tyrant Who Owned the World"
Pages: 24

Feature(s):
Challengers of the Unknown (of Earth-1)

Writer: Bill Finger
Artist: Bob Brown

Feature Character(s)

• Challengers of the Unknown (last appearance in Doom Patrol #102; next appearance in Challengers of the Unknown #50)
• Ace Morgan (last appearance in Doom Patrol #102; next appearance in Challengers of the Unknown #50)
• Rocky Davis (last appearance in Doom Patrol #102; next appearance in Challengers of the Unknown #50)
• Red Ryan (last appearance in Doom Patrol #102; next appearance in Challengers of the Unknown #50)
• Prof. Haley (last appearance in Doom Patrol #102; next appearance in Challengers of the Unknown #50)

Villain(s)

• Korba and his guards (no further appearances)
• The Iron Gladiator and a totem creature (no further appearances)

Other Character(s)

• Anthony Dragio and the Challenger Corps (Tom Kaloki named; last appearance in Challengers of the Unknown #44; no further appearances)
• An old sailor and slaves of Korba (no further appearances)

Synopsis:
The Challengers meet a group of supporters from various countries that they rescued on a previous mission. Inspired by the Challs, they have formed the Challenger Corps, a secret organization intended to inform the Challengers of threats around the world.

The Challenger Corps contacts the Challs concerning a dangerous island in the Pacific. When the Challs investigate, they are caught in a whirlpool and brought to the island as prisoner. The island is controlled by a tyrant named Korba. He enslaves the Challs along with other victims of the whirlpool.

The Challs are forced to fight in an arena against a giant robot. Using special weapons they brought with them, the Challs defeat the Iron Gladiator. However, Korba also control an ancient totem creature. The creature's powers are great, but by working together the Challengers defeat it. Korba's island lies in ruins after the battle, and the Challs apprehend him.