ALIENS AND SO FORTH ROUND-UP 016

Love those aliens. And so forth. 

the Sea Demons:

The Sea Demons are a hostile underwater race of fish-men who look great but get very little character development as a society. Their main thing seems to be a deeps desire to attack and capture...

the Sea Amazons:

The Sea Amazons (described as "blonde Sea Amazons" at least twice in the text despite the fact that a pretty noticeable percentage of them - including their queen! - are brunettes) are about a (blonde) hair more well-developed than the Sea Demons. They are a race of amphibious women who live in the city of Mermea under the rule of Queen Bea (or possibly Mea) and who just hate being kidnapped by those dang Sea Demons. To that end, they have tamed a creature called the Guardian, and I must say that while I love the Guardian and its look I have an incredibly hard time figuring out its anatomy: its main component is an enormous humanoid head, yes, but is it stuck on the end of an eel body with a chin-mounted tentacle? Is it more like a giant slug? Are there two tentacles that I'm meant to picture churning through the water? 

Though the Sea Demon and Sea Amazon societies are at odds, they do in fact have a lot in common, such as the Sea Demon's own beast, the Seaclops, seen here battling the Guardian. They don't really get around to exploring these similarities, however, as undersea hero Typhon ends up blowing up both the Seaclops and most of the Sea Demons. (Weird Comics 005, 1940)

Crab Men: 

These Crab Men from Mercury have been trapped on a derelict spaceship for twenty years - are they really vicious or just looking for help? Space adventurers Gale Allen and Jack North are taking no chances, and vaporize them with an artificial sun ray. (Planet Comics 008, 1940) 

Cranians:

Rex Dexter of Mars has the honour of encountering the Cranians, an alien race so goofy that even in-fiction they are believed to be just a myth. But what has brought the Cranians out of the mists of legend to aggress against the human race?

It turns out that if you have a hand for a head and heads for hands, having that extra nose means that you will breathe twice as much and thus eventually use up all the oxygen on your planet, and rather than planting some extra forests, the Cranians have decided that the best solution to this problem is the conquest of Earth and its rich stores of O2.

I personally do not think that a machine that controls Earth's atmosphere such that oxygen levels can be cut in half near-instantly is a particularly good idea, but it turns out that I am a fool because not only does the far future Earth of 2000 AD have such a device but it proves integral to the defeat of the Cranian menace when Rex Dexter does just that. Live and learn, as they say. (Mystery Men Comics 017, 1940)

MINOR SUPER-VILLAIN 707: PRINCE BLAGA DARU

(Planet Comics 005, 1940) 

Gale Allen was a long-running feature of Planet Comics, which meant that she was a creation of many absent-minded hands. She is always an officer in a gendered space organization, but whether that is the Women's Space Battalion, the Girl's Patrol, the Girl's Squadron and so forth varies from issue to issue. The story is set in the far-off year of 1990 but drifts farther into the future over time. She turns blonde eventually. You get the picture. 

Early Gale Allen stories feature spaceman Jack North as a real pill of a sidekick who spends much of his on-panel time carping on about how women don't belong in the space military. They also feature Prince Blaga Daru, a space pirate-turned-world conqueror who has the hots for Gale, possibly because she is semi-secretly a Venusian princess but possibly just because he likes a strong woman.

In his first appearance, Daru has already conquered Europe and set his eyes on invading North America, with Step I of his plan involving taking control of the the Sub-Oceanic Transit Tube, aka the Trans-Atlantic Subway. Gale Allen and her Falcon Squadron set out to stop him, and shockingly don't succeed! That is, they do succeed in driving off the initial attack and then get captured by the Prince's special Gale Allen task force, for you see he loves her and wants to marry her. She of course tells him to go screw and gets away with the help of Jim North.

(the Prince's world domination scheme is kiboshed in the subsequent issue and Blaga Daru himself is punched in the eye for his trouble)

Prince Blaga Daru makes two more spends his next two appearances, in Planet Comics 009 and 011, and in both he has shifted his focus almost entirely to the pursuit of Gale Allen's hand in marriage. But not by reforming and being a cool guy and courting her on her terms, no. Prince Blaga Daru is a space pirate, and space pirates kidnap their love interests and marry them against their wills. It's a real culture clash, and it ends up with the Prince unceremoniously falling out of a spaceship door to his demise.