Located in sector 1014, H'lven is an arboreal world whose peaceful inhabitants resemble anthropomorphic versions of squirrels or chipmunks. H'lvenites, or "monks" as they are sometimes called, generally live in trees but possess the same technology as 21st century Earth. H'lven was the target of an invasion led by Doctor Ub'x, who easily subjugated the defenseless population. Ub'x was defeated when a Guardian of Oa gave the resistance leader Ch'p a Green Lantern power ring. H'lven was also involved in a long-running conflict with the planet Berrith, which ended when Berrith was destroyed by a supernova. Outside of these difficulties, H'lven remained relatively peaceful except for occasional bouts of lawlessness from Doctor Ub'x and his allies. During the "Crisis on Infinite Earths", H'lven's history was substantially altered. In the new timeline, H'lven never had a Green Lantern protector, nor was it ever menaced by Doctor Ub'x. Ironically, both Ch'p and Ub'x survived the Crisis and eventually relocated to Earth. Years after Ch'p's demise another H'lvenite, B'dg, was recruited to join the Green Lantern Corps
H'lven's major holiday is the Annual Harvest and Nut Gathering, which generally takes place before the population enters a general state of hibernation. Upon waking from hibernation, H'lvenites are generally groggy and listless for days or weeks. This post-hibernation sickness may have been a contributing factor in the death of Ch'p, who was run over by a yellow truck while under its effects.