Name: Blok
Universe: Earth-1
Alter Ego: None
Occupation: Legionnaire
Marital Status: Single
Group Affiliation: Legion of Super-Heroes
Base of Operations: 30th Century Earth
Known Relatives: None
Height: 7 ft. 2 in.
Weight: 975 lbs.
Hair Color: None
Eye Color: White
First Appearance: Superboy & the Legion of Super-Heroes #253

History:
A member of the sentient rock species that inhabited the planet Dryad in the latter half of the 30th century, Blok was tricked into believing that the Legion of Super-Heroes was responsible for the destruction of Dryad. Together with five young super-powered human settlers from the disintegrated planet, Blok formed the League of Super-Assassins and attacked the LSH.

Ultimately, Blok learned that the Legion had really saved the population of Dryad from a natural disaster, and that a villain known as the Dark Man had tricked the Super-Assassins. The other five members remained outlaws, but Blok reformed and joined the Legion shortly thereafter.

Powers:
Blok's alien body has the qualities of tremendous mass, near-invulnerability, and greater than human strength. As a Legionnaire he has completed personal combat training (as adapted to his physiology) with undistinguished results, and wears a specially developed LSH flight ring that allows him to fly at will.