Baron Von Tundra

Real Name: Baron Von Tundra
First Appearance: Air Fighters Comics vol. 1 #2 (Nov. 1942)
Original Publisher: Hillman
Created by: Harry Stein & Mort Leav

Origin: 

Colonel Von Tundra was a ruthless Nazi cyborg, whose left side, after being shot down in a dogfight by the hero Skywolf, was completely replaced by steel, robotic parts. Because of that, he was also known as Half-Man.

He reported directly to Adolf Hitler.

At one point, he was abducted by the Heap, who enjoyed the fact he spoke German (though the beast had clearly lost the ability to understand his actual words). Von Tundra managed to escape both death and capture on several occasions, ultimately, however, being brought to justice.

Powers and Abilities:

His steel fingers could easily break a man's neck and he usually carried a sidearm.

Public Domain Appearances: 

Air Fighters Comics vol. 1 #2-3, 8

vol. 2 #4

Zzed

Real Name: Unknown
First Appearance: Airboy Comics vol. 6 #12 (January 1950)
Original Publisher: Hillman
Created by: Ernest Schroeder

Origin: 

Zzed was an immortal who had been present at all the greatest human tragedies in history for the last 2000 years. It seems that he could not die until the world came to an end, and he hoped to hasten the process.

Eventually, in the 20th century, he mastered technology that allowed him to control the "star brain" or the collected energies of all the brains of the world over the ages. With this power, he gained all knowledge, and the ability to control, at least to a limited degree, the minds of all people on Earth. From a secluded mansion in Swampheart, Georgia, he used this power to initiate violent riots all over the world. However, the machine he used to control the star brain was smashed during a confrontation with Airboy.

Even without the power of the star brain, Zzed had accumulated great knowledge in his centuries of life, and he frequently spoke ancient incantations of some unknown language. Although he could be killed temporarily, he seemed to have rapid regenerative abilities that would bring him back to life.

Public Domain Appearances: 

Airboy Comics vol. 6 #12

Twilight

Real Name: Terry Gardner
First Appearance: Clue Comics #1 (1943)
Original Publisher: Hillman
Created by: John Cassone

Origin: 

Marine Sergeant Terry Gardner, a former private detective and former champion wrestler, tangles with some Germans, Maxim and Nada, who seek to murder Wilmer, the man Gardner is protecting. The Nazis, though, kill a gypsy. The gypsy's parrot, named Snoopy, helps Gardner to avenge his owner's death. Snoopy visits Gardner and inspires him by giving him a card telling him that "At Twilight you will be Master." Thus inspired, Terry buys a costume for himself and begins fighting crime as Twilight. Among his opponents were Boss Bogus, the Counterfeiter, Baby Face and his shrinking gas, and Brother, a gorilla thug dressed as a human and disguised with bandages. He is helped by Snoopy the Parrot, a wisecracking, foul-mouthed talking bird who he uses to gather information.

Public Domain Appearances: 

Clue Comics #1-5, 7, 9

Nightmare & Sleepy

Real Names: Bob White & Terry Wake
First Appearance: Clue Comics #1 (1943)
Original Publisher: Hillman
Created by: Alan Mandel & Dan Barry

Origin:

Sleepy becomes Night Terror

Alternative uniform

Nightmare and Sleepy are wrestler Bob White and his teenage manager, Terry Wake, respectively. They are just regular Joes who put on costumes and fight crime without super powers or gadgets.

Most of their superhero careers featured Nightmare wearing a skeleton-like costume and Sleepy dressed like the Grim Reaper. The skeleton's designs were lined with phosophoros, which created the illusion of moving, glowing skeleton in the dark.

Nightmare and Sleepy later switched costumes.

Public Domain Appearances:

Clue Comics vol. 1 #1-12

vol. 2 #1-2