The Landlaks are the inhabitants of the moon Birj of the gas giant Marman in a solar system eighty thousand years from Earth. Marman is the seventh planet from its sun. Birj is the sixth closest moon to Marman.
They are known for Tyros, the dictator of the small city-state Terran (later referred to as Lanlak). Each city on Birj is ruled by a powerful family.
Tyros ruled through the use of his limited power over rock and earth, a mutation unique to him. While the others of his race were shown to be telepathic, Tyros has never been shown to possess this ability.
When Galactus took Tyros in as his new herald, the planet Birj was freed from his dictatorship, only for him to return later and take back his lead.
Mishna, another resident of Birj, was once talked out of selling her soul to Mephisto.