KALONIANS

Advanced Humanoid species with cut-steel-blue pigmentation from the planet Kalonia in the Wolf-Lundmark-Melotte Galaxy. They were pawns of the Eddorians.
Source: E.E. "Doc" Smith

CHICKLADORIANS

Advanced species of pink skinned humanoid with triangular eyes which evolved on the planet Chickladoria.
Source: E.E."Doc" Smith

VELANTIANS

Velantians are part of the Arisians Breeding program that developed on Velantia III They are an advanced reptilian species that developed space travel. Dragonlike, they are massive, winged and possess 2 pairs of eyes.
Source: E.E "Doc" Smith, David Kyle, Lensmen from Rigel

RIGELLIANS

Rigellians are part of the Arisians Breeding program that developed on the superhot, high-gravity world of Rigel IV. They are an advenced species that developed space travel. Monolithic, they are quadruped with an egg shaped body with four prehensile tentacles coming out the their middle and four mouth near their top.
Source: E.E "Doc" Smith, David Kyle, Lensmen from Rigel

EDDORIANS

The Eddorians are a psychic dictatorial, power-hungry shapeless species from the planet Eddore in another universe where the laws of physics are different. They were attracted to this universe by the observation that the Milky Way and a sister galaxy, the Wolf-Lundmark-Melotte galaxy might be passing through each other. The Eddorians believed that this would result in the formation of billions of planets and the development of life upon them. Dominance over these life forms seemed to the Eddorians the logical course of action. This dominance isexercised on their behalf by a hierarchy of underling races. The Eddorians themselves are physically similar to various lower Earthly life-forms, reproducing by fission but by a process more similar to budding than to cell division, except that each being's memories are preserved. They are highly competitive, extremely long-lived, and almost impossible to kill

Source: E.E. "Doc" Smith, Triplanetary

ARISIANS

Peaceful humanoid species that have developed what could be among the first sentient civilisation in our universe. They have forgone physical and developed tremendous mental power. Foreseeing the invasion of our universe by the Eddorians, a species from another universe, they began, over 2 billion years ago, a covert breeding program on every world that can produce intelligent life, with the aim of producing a means to eventually destroy the Eddorian race. Their work done, their plans are to remove themselves from the universe.
Source: E.E. "Doc" Smith, Triplanetary