Comic Title: Showcase Presents:Legion of Super-Heroes Vol. 1 TPB
Publisher: DC
Cover Date: 2007
On Sale Date: April 4, 2007 Direct Market Date April 4, 2007
Source: Previews, Vol. 17 #1 (#217)

Direct Market Date April 4, 2007
Source: Usenet, New Releases List for Wednesday, April 4, 2007

Direct Market Date April 4, 2007
Source: Comic Shop News, #1031

Cover Price: $16.99
Page Count: 552
Editor: Peter Hamboussi

See Also: The Guide to Graphic Novels and Collected Editions

Title: "The Face Behind the Lead Mask"
Pages: 12

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

Writer: Jerry Siegel
Artist: John Forte
Artist: Al Plastino

Reprinted From:
Adventure Comics #300 (1962)

Feature Character(s)

• Legion of Super-Heroes (last appearance in Superboy #98; next appearance in Superman #156)
• Cosmic Boy (last appearance in Superboy #98; next appearance in Superman #156)
• Saturn Girl (last appearance in Superboy #98; next appearance in Superman #156)
• Lightning Lad (last appearance in Superboy #98; next appearance in Superman #156)
• Superboy (last appearance in Adventure Comics #300; next appearance in Superboy #100)
• Sun Boy (last appearance in Action Comics #287; next appearance in Superman #156)
• Mon-El (joins the Legion of Super-Heroes in this story; last appearance in Phantom Zone #2; next appearance in Adventure Comics #304)

Villain(s)

• Lex Luthor (last appearance in Superboy #96; next appearance in Adventure Comics #301)
• Urthlo (Luthor’s robot; its name is an anagram of Luthor; no further appearances)

Other Character(s)

• Two unnamed "World-Wide Police" officers (no further appearances)
• An unnamed guard at the Smallville Reformatory (no further appearances)
• Citizens of 30th century Metropolis (no further appearances)

Flashback Appearance(s)

• Mon-El (during Superboy's time period; last appearance in Adventure Comics #293; next appearance in Action Comics #284)

Cameo Appearance(s)

• Chameleon Boy (as a statue)
• Invisible Kid (as a statue)
• Shrinking Violet (as a statue)
• Bouncing Boy (as a statue)

Comments:
The Science Police are called the World-Wide Police in this story.

The Legion of Super-Heroes is mistakenly said to exist in the 21st century in this story.

The Legionnaires switch from using rocket-packs to anti-gravity belts in this story.

Following this story, Bouncing Boy, Brainiac 5, Chameleon Boy, Cosmic Boy, Invisible Kid, Lightning Lad, Saturn Girl, Shrinking Violet, Sun Boy, and Triplicate Girl try to cure Superman of Virus X in Superman #156.

Then Ultra Boy attends a Legion meeting with Cosmic Boy, Saturn Girl, Lightning Lad, and Chameleon Boy, and helps out honorary member Pete Ross in the second story of Superboy #100.

Synopsis:
During a routine meeting, the Legionnaires suddenly begin losing control over their powers. Even Superboy, whom they have summoned to the future, cannot discover the cause of their problem. After the World-Wide Police threaten to banish them from Earth, a lead-masked villain calling himself "Urthlo" appears and takes credit for their predicament.

Because Urthlo possesses a device that controls their powers, the heroes find themselves unable to stop him, until Saturn Girl and Superboy release Mon-El from the Phantom Zone, where he has been for 1000 years. After she provides him with Serum XY-4, a temporary lead-poisoning antidote, Mon-El defeats Urthlo, who turns out to be a robot sent into the future from Superboy’s time by a vengeful Lex Luthor.

After the battle, Mon-El must be returned to the Zone, but only after being voted into the Legion.