Comic Title: Mystery in Space #108
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: June 1966
On Sale Date: April 26, 1966 Newsstand Date April 26, 1966
Source: Direct Currents, Action Comics #337, Page 8

Newsstand Date April 26, 1966
Source: House Ad, Tales of the Unexpected #95, Page 9

Copyright Date April 26, 1966
Source: Library of Congress, Periodicals 1966

Frequency: Monthly, with the exception of Jan., April, July and Oct.
Cover Price: $0.12
Page Count: 32
Editor: Jack Schiff

Title: "The Invasion of the Colossal Creatures"
Pages: 16

Feature(s):
Ultra the Multi-Alien

Writer: Dave Wood
Artist: Lee Elias

Feature Character(s)

• Ultra the Multi-Alien (last appearance in Mystery in Space #107; next appearance in Mystery in Space #109)

Supporting Character(s)

• Bonnie Blake (last appearance in Mystery in Space #107; next appearance in Mystery in Space #109)

Villain(s)

• Kratum and Vaaro (giants; no further appearances)

Synopsis:
Two strange giants materialize on Earth and begin causing trouble. Ultra is summoned, but he soon finds that he is powerless to stop the giants. The giants each steal fast moving objects then transport themselves to Mars. Ultra follows them, where he observes the giants trying to locate the hardest object. Ultra deduces that they are on a scavenger hunt. Next, he follows them to Pluto where he fears they will destroy the powerful reactor there. Instead, Ultra tricks the giants into fighting one another. Soon, the time limit for their game expires, and the giants return home. By delaying the giants Ultra saved the reactor.