
This is the story I mentioned before, the one that introduced the Dominators into the DCU in 1967. The Dominators are a perfect example of a phenomenon I call "los Boomerangeros": characters introduced as a throwaway plot device in a (usually Silver Age) story, winds up come back as pillar figure in later stories.
Copperhead, the Mad Hatter, Bizarro, Metallo, Star Boy, Ultra-Boy, Mon-El; they and many others are Boomerangeros, because if you read their first appearances you'll be surprised how secondary they are. They are merely slapdash props used in stories whose real focus is Secret Identity Farces, Jealousy Dramas, Apparent Betrayals, Inverted Expectations or any of the other tedious soap opera plots characteristic of Silver Age DC comics. Only later do other writers fill such characters out and make them into pillars of their respective mythologies.
Such was the fate of the Dominators. But how did these alien Boomerangeros start out?
The plot of their initial story, "the Unkillables", requires the existence of some political bad guys that the Legion must protect to facilitate a peace treaty. So instantly we are informed that the United Planets has been at war with an imperialistic race known subtly as "the Dominators".
Really? The entire UP in a 20 year war, huh? Amazing how something that important's never once been mentioned before in any Legion story. I guess CNN doesn't survive to the 30th Century.
Anyway, a lot of people are none too happy about the prospect of the Dominators receiving an easy peace.
The "Panties Against Peace" Rally

The Dominators destroy not only planets ... but pants.
Curse those disc-heads! "Stay the course!"
Curse those disc-heads! "Stay the course!"
What are the Legionnaires doing, while war has been ravaging the UP for the last 20 years? Oh, you know, the usual ...
Chopping wood.

I detest Karate Kid; martial artistry is not a superpower,
and KK represents to me all pathetic attempts to create fad-based characters.
And, no, Vibe does not count.
and KK represents to me all pathetic attempts to create fad-based characters.
And, no, Vibe does not count.
Fencing

I love Triplicate Girl/Duo Damsel. Her power's not overwhelming in force, but it is overwhelming in concept; you can imagine what it's like to be any of the Legionnaires -- except her, because how she perceives the world is incommensurable with our unary worldview. Plus, she can pull off wearing orange and purple, which is more of a superpower than "super-karate". Oh, and, as former Second Foil on the Dartmouth Fencing Team, I'm delighted to see that fencing enjoys a renaissance in the 30th century.
Lifting weights

If you read a lot of Legion, you'll notice this is pretty much all B5 and Superboy do in their spare time. Variations of this scene have appeared in scores of Legion stories over the years. Does Brainiac 5 have a crush fetish? What is this adolescent literalist fascination with how much weight Superboy can lift? I think he and B5 must be the secret editors of the Official Handbook of the Marvel Universe.
So these exciting leisure activities are interrupted by an urgent summons from the UP president, who's going to assign them to escort the Dominators to a peace conference. On the way to visit him, the Legionnaires pass through all manner of "futuristic" security measures, including this personal favorite:
The X-Ray Tunnel

Film? FILM?!?!?! How... quaint.
Apparently, old-school photography (along with fencing)
experiences a renaissance among spies in the 30th century.
I blame Elastic Lad.
Apparently, old-school photography (along with fencing)
experiences a renaissance among spies in the 30th century.
I blame Elastic Lad.
Oh, before we return to the story proper, I wanted to share some slides of a party I went to during my vacation in the 30th century; thanks for the invite, Blockade Boy!

adds spice to the proceedings.
So, anyway, this guy, "the Master" has a plan to wipe out the Dominator peace ambassadors and their protectors, the Legion:
The Master ensures that his "unkillable" assassins are armed with the latest in 30th century killing technology:
Meanwhile, the Dominators meet with the Legion.

The Dominators are the "opening act" for the Unkillables:
"Are you ready to rock, Cleveland? We are ... the Dominators!"
"Are you ready to rock, Cleveland? We are ... the Dominators!"
Note well that the Dominators have no noses or lips or regular eyeballs. This'll come up later.
The Legionnaires do what any sensible person called upon to escort endangered ambassadors would do: take a short-cut through the Tenth Dimension. You know, the Tenth Dimension, which has never been mentioned before and will never be mentioned again. Try to keep up, will you?

So, naturally, along the way, there are lots of narrow escapes from death traps and attacks by the Unkillables, but Colossal Boy still finds time to do what he does best: fall on his hands and knees.
When the Legion finally defeats the Unkillables, the Master is unmasked as the former political leader of the Dominators, thrown out of office by the Dominators' Peace Faction. The Dominator, who has no nose or lips or visible eyeballs, was the Master, who clearly had a nose and lips and visible eyeballs underneath his mask.
This is how you can tell the Silver Age is nearing its end; in the High Silver Age, whoever removed his mask would have said, "His mask was doctored to give the appearance of human features, so that no one would suspect he was a Dominator!" But that kind of loving attention to Literary Craft faded toward the end of the Silver Age. That's how the world ends, folks: not with a bang but a whimper.
When the Unkillables are unmasked, they are, of course, exactly who you would expect them to be:

The brainwashed superpowered 30th Century lookalike descendants of a few famous human assassins like Lee Harvey Oswald, Brutus & Cassius, and John Wilkes Booth (none of whom, if I recall correctly, had any children).
Well, of course. I mean, who else would you use to assassinate political figures?
So that's the story of the introduction of the Dominators into the DCU. But isn't something missing? How can it be a real Legion story without some sort of cruel trick played on well-meaning friends and companions?

Phew! I was worried for a second! Fortunately it turned out than the "ambassadors" were just high-tech phantasms used as decoy, a cruel trick played on the duped Legionnaries; now it's a real Legion story.

I must confess I'm certain that the visual revamp of the Dominators is brilliant resonant (consciously or unconsciously) of the vilification of the "Japanazis" in WWII.
