Malklocs, large reptilian beings, originated on the planet Dathomir. Despite being plant-eating herd animals, they occupied a high position in the planet's ecological order. Their substantial size meant that only predators like rancors were capable of preying on them.
The Malklocs shared certain physical traits with other large reptilian species, including the fambaa, huf dun, and tortons. Using Malkloc DNA, bioengineers were able to produce mutated versions of these creatures, which came to be known as malosaurs.
Malklocs were featured in Star Wars Galaxies, a massively multiplayer online roleplaying game released in 2003. The video game was created by Sony Online Entertainment and distributed by LucasArts, before the game's servers were shut down on December 15, 2011.