An ill-advised attempt to connect the prominent blue-skinned races in the Marvel & DC Universes.
Maltusians -- The Progenitor Race in Universe 641
The Maltusians were either cursed or traumatized by the effects of that exploration and experimentation. Rumors and accepted history vary, but they say it resulted in: a) splintering the universe into a multiverse; b) unleashing evil into the universe; c) creating the anti-matter / negative universe. It was a watershed event -- this ill-advised attempt at understanding or controlling the universe resulted in a splintering and scattering of the race.
Through processes unknown to other races, the progenitor race modified itself or was cursed -- the more conquest-driven members of the race became the Kree (blue and pink-skinned), the guilt-ridden scientists and philosophers obsessed with control became the Oans (blue-skinned) and the Controllers (violet-skinned), and the Zamarons (blue-skinned females). The more pacifistic, withdrawn members became the Watchers (pink-skinned). There may be more of their race -- hidden enclaves, lost tribes, exiled luminaries -- scattered or hidden across the stars in unknown locations. What is known, as that their awesome knowledge base splintered, fragmented, turned in on itself, and mutated in strange ways across the millennia.
Perhaps this is why they were banished to a world where they were forced to live in harmony with the Cotati. Perhaps this is why they strove so hard against the same Cotati to win a chance at higher technologies from the Skrull. Perhaps this is why they ultimately slaughtered the Cotati and that Skrull faction for the advanced technology being offered as a prize.
Their empire has grown and shrunk across the years due to wars, most often with the Skrulls, but sometimes with the avian-descended Shi'ar.
The Oans (Guardians, Controllers, Watchers, etc.)
They seem hostile to the concept of emotion and passion (and sometimes compassion), which has -- more often than not -- caused many intergalactic races and empires to be wary of their attempts to help the universe through their paramilitary organizations and weapons.
In recent years, their control over a preferred source of reality-bending energy known as "The Glow" has erupted into a so-called 'War of Light', involving their Green Lantern Corps.
Shades of Blue
Surely not all blue races are of Maltusian descent. However, some humanoid races of note may have same claim to that genetic lineage:
- Talokians -- a race of humanoids of varying shades of blue that have produced wielders of Starlight and wielders of Shadow. The former is a race obsessed with conquest, the latter is more xenophobic and isolationist.
- Centaurians -- blue mystics with crests on their heads, able to control metal with sound; is this a lost tribe of warrior-philosophers?
- Atlanteans -- are the blue-skinned members of this race part of a breeding experiment with Kree DNA in the earliest days of the human race?