Dc Microheroes Wiki

Cosmic Boy (Pre-Zero Hour)
Pre-Zero Hour
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Real name Rokk Krinn
Alias Cosmic Boy
Occupation Legionnaire
Alignment Good
Family Pol Krinn, aka Magnetic Kid (brother, deceased); Ewa Krinn (mother, deceased); Hu Krinn (father); Lydda Jath, aka Night Girl (sometime partner)
Affiliation Legion of Super-Heroes (Pre-Zero Hour); Legion of Substitute Heroes (II)
Homeworld Braal
First appearance Adventure Comics vol 1 #247 (Apr 1958)
Universe Pre-Zero Hour
Alternate versions see Cosmic Boy disambiguation
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Rokk Krinn, a teenage former magnoball champion from the planet Braal, left his homeworld for Earth to find work. On the journey he met Garth Ranzz from Winath and Imra Ardeen from Titan. On arriving at Earth, the three acted together to save billionaire RJ Brande from being assassinated. A grateful Brande was impressed with the three youngsters, and suggested they form a team of superheroes, pointing out that the legendary Superman had begun his career as a boy. So the Legion of Super-Heroes was born. Rokk took the name 'Cosmic Boy', and became the team's first leader, gathering additional members to boost the team.

One of the members of the Legion of Substitute Heroes, Lydda Jath, alias Night Girl admired Rokk greatly, and although her feelings were not reciprocated at first, they later formed a stable relationship.

In later years, Rokk suffered tragedy when his mother, Ewa Krinn was killed in a fireballing incident, and also when his younger brother, Pol Krinn, who had joined the Legion as 'Magnetic Kid', sacrificed himself to save the universe from the Archmage.

Original (Adventure Comics vol 1 #247)[]

Classic period (Adventure Comics/Action Comics)[]

70s/80s (Superboy & the LSH/LSH vols 2 & 3)[]