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The Hirogen /hɪˈrɪn/ are a fictional race in the Star Trek universe, a long-running plot device in the Star Trek: Voyager television series, appearing nine times in Seasons 4-7. Portrayed as a significant threat to the Voyager crew, the Hirogen are portrayed as a dominant warrior species in the region, roaming vast distances in pursuit of worthy prey. While portrayed as an ancient race, their technology is not superior to that on Voyager, although their "tetryon"-based weapons are unfamiliar to Starfleet. While the Hirogen are initially a major threat to Voyager, the Starfleet crew eventually help the Hirogen to solve problems arising from their way of life, leading to a de facto truce.