Comic Title: Challengers of the Unknown #25
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Apr/May 1962
On Sale Date: February 13, 1962 Copyright Date February 13, 1962
Source: Library of Congress, Periodicals 1962

Frequency: Bi-monthly
Cover Price: $0.12
Page Count: 32
Editor: Jack Schiff

Title: "Captives of the Alien Hunter"
Pages: 13

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

Artist: Bob Brown

Reprinted In:
Showcase Presents:Challengers of the Unknown Vol. 2 TPB (2008)

Feature Character(s)

• Challengers of the Unknown (last appearance in Challengers of the Unknown #25; next appearance in Challengers of the Unknown #26)
• Ace Morgan (last appearance in Challengers of the Unknown #25; next appearance in Challengers of the Unknown #26)
• Rocky Davis (last appearance in Challengers of the Unknown #25; next appearance in Challengers of the Unknown #26)
• Red Ryan (last appearance in Challengers of the Unknown #25; next appearance in Challengers of the Unknown #26)
• Prof. Haley (last appearance in Challengers of the Unknown #25; next appearance in Challengers of the Unknown #26)

Supporting Character(s)

• Cosmo (last appearance in Challengers of the Unknown #21; next appearance in Challengers of the Unknown #32)
• June Robbins (last appearance in Challengers of the Unknown #24; next appearance in Challengers of the Unknown #26)

Villain(s)

• Kubagy and his robot (no further appearances)

Synopsis:
An alien comes to Earth and raids a swimming pool and a laundry plant. The Challs try to stop the alien but are paralyzed by the alien’s weapon. Cosmo, the Challs pet, is able to rescue them using his special powers.

The alien is able to get away and when he meets the Challs again he is ready to deal with Cosmo. He kidnaps June and leaves. Cosmo recovers and frees the Challs, who then deduce the alien’s next target.

At a chlorine plant, the alien and the Challs meet again. This time the alien uses a powerful robot against them which is powered by the chlorine. The Challs stop the alien and outlast the robot until it runs out of power. Then they send both alien and robot back to their own planet.