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Rokk Krinn
Rokk Krinn

Rokk Krinn

169 appearances Β· Silver Age Β· 1960–2026 Β· 17 key issues
Who is Rokk Krinn?

Born on the planet Braal in the 30th century, Rokk Krinn possesses natural magnetic powers common to his world's inhabitants. He traveled to Earth and co-founded the Legion of Super-Heroes, becoming its first leader thanks to his exceptional charisma and above-average intellect.

Few Silver Age debuts have proven as enduring as Rokk Krinn, who first graced the pages of Action Comics #267 in 1960 under the hands of Otto Binder and Wayne Boring β€” and hasn't stopped appearing since, with 169 catalog entries stretching all the way to 2026. A DC stalwart forged in the optimistic glow of the Silver Age, Rokk has called Adventure Comics and Legion of Super-Heroes home across the decades, sharing countless adventures alongside luminaries like Saturn Girl, Imra Ardeen, Garth Ranzz, and even Clark Kent himself. With 17 key-issue appearances to his name, collectors have long recognized that Rokk Krinn isn't a footnote β€” he's a cornerstone, the kind of character whose longevity across six-plus decades speaks louder than any single story ever could. If you're building a serious appreciation of DC's deep future mythology, this is absolutely where you want to start digging.

Identity

Real name. Rokk Krinn

Powers. : Cosmic Boy is from the 30th Century, and as such his intellect is a level 9, compared to the average level 6 intellect of someone from the 21st Century. ; : Cosmic Boy is a charismatic and effective leader, as seen during his successful tenure as the Legion's first leader.

Teams & affiliations
Legion of Super-HeroesLegionnairesDaily PlanetScience Police
β˜… First appearance
Adventure Comics #247
Apr 1958

Trivia

  • DC's own official character reference material has consistently enshrined him as the Legion's founding leader β€” cementing that role as a cornerstone of his publication history, not merely a point of nostalgic fan lore.moviecomicswhoswho.wordpress.com

Top series

Covers through the years β€” 1960–2022

Action Comics #267 β˜… 1960
Action Comics #267
Superman's Pal, Jimmy Olsen #85 1965
Superman's Pal, Jimmy Olsen #85
Action Comics #392 β˜… 1970
Action Comics #392
House of Mystery #255 β˜… 1977
House of Mystery #255
The Legion of Super-Heroes #272 β˜… 1981
The Legion of Super-Heroes #272
Who's Who: The Definitive Directory of the DC Universe #5 β˜… 1985
Who's Who: The Definitive Directory of the DC Universe #5
L.E.G.I.O.N. '89 #9 1989
L.E.G.I.O.N. '89 #9
Congorilla #4 1993
Congorilla #4
Adventure Comics 80-Page Giant #1 1998
Adventure Comics 80-Page Giant #1
Adventures of Superman #617 2003
Adventures of Superman #617
The Legion of Super-Heroes in the 31st Century #16 2008
The Legion of Super-Heroes in the 31st Century #16
DC Universe: Legacies #[nn] 2012
DC Universe: Legacies #[nn]
Batman '66 Meets the Legion of Super-Heroes #1 2017
Batman '66 Meets the Legion of Super-Heroes #1
'Tis the Season to Be Freezin' #1 2022
'Tis the Season to Be Freezin' #1

Appearances (1–150 of 169, oldest first)

Action Comics (1938)
Superboy (1949)
Superman (1939)
Superman Annual (1960)
#6
Superman's Pal, Jimmy Olsen (1954)
Blackhawk (1957)
Superman Supacomic (1959)
Wonder Woman (1942)
Limited Collectors' Edition (1972)
House of Mystery (1951)
All New Collectors' Edition (1978)
DC Special Series (1977)
#19
The Legion of Super-Heroes (1980)
DC Sampler (1983)
#1
The Best of DC (1979)
#44
Crisis on Infinite Earths (1985)
#3
Who's Who: The Definitive Directory of the DC Universe (1985)
Tales of the Legion of Super-Heroes (1984)
Legionnaires Three [Legionnaires 3] (1986)
Legends (1986)
Tales of the Legion of Super-Heroes Annual (1986)
#4
Cosmic Boy (1986)
The Fury of Firestorm (1982)
#55
Adventures of Superman (1987)
Batman (1940)
Who's Who: Update '87 (1987)
Legion of Super-Heroes (1984)
Comics Scene (1987)
Who's Who in the Legion of Super-Heroes (1988)
#1
L.E.G.I.O.N. '89 (1989)
#9
Hawkworld (1990)
#1
Justice League Europe Annual (1990)
#2
DC Silver Age Classics Adventure Comics 247 (1992)
Legion of Super-Heroes Annual (1990)
#3
Timber Wolf (1992)
#1
Congorilla (1992)
#4
Legionnaires (1993)
Valor (1992)
#23
The Darkstars (1992)
#0
Green Lantern (1990)
#98
Adventure Comics 80-Page Giant (1998)
#1
Legion of Super-Heroes: The Beginning of Tomorrow (1999)
Superman in the Sixties (1999)
The Legion (2001)
#3
Superboy #147 May-June 1968 Replica Edition (2003)
JSA (1999)
#51
Bizarro World (2005)
Solo (2004)
#7
The Brave and the Bold (2007)
Superman: The Amazing Transformations of Jimmy Olsen (2007)
The Legion of Super-Heroes in the 31st Century (2007)
#16
Tiny Titans (2008)
#31
DCU: Legacies (2010)
Booster Gold (2007)
#43
DC Comics Presents: The Teen Titans (2011)
#1
DC Universe: Legacies (2011)