The Greech (known to the Borg as Species 433) were a sentient, cytoplasmic, pseudoparasitic species living in the Delta Quadrant. The starship Voyager rescued one such being from its disabled ship, and the creature attached itself to B'Elanna Torres to keep itself alive. However, The Doctor, along with a holographic version of Crell Moset, was able to remove the creature without killing it. (VOY episode: "Nothing Human")

A group of Greech became part of the Indign cooperative. They bond with the humanoid species, the Neyser in a symbiotic relationship. These Greech were physically larger than the ones encountered previously by Voyager. (VOY novel: Unworthy)

Delta Quadrant races and cultures

Akritirian • Aksani • Alkian • Alsuran • Ankari • Annari • Antarian • Argala • Arrithean • Artilotian • Ba'Neth • Banean • Bara Plenum • Benkaran • Benthan • Berm • Biomimetic lifeform • B'omar • Boray • Borg • Botha • Bourget • Brenari • Briori • Brunali • Caatati • Casciron • Chessu • Children of the Storm • Chokuzan • Cravic • Cytoplasmic lifeform • Devore • Dinaali • Drakina Forest dweller • Dralian • Drayan • Dream species • Dresh • Druoda • Enaran • Entaban • Entharan • Etanian • Farn • Finorian • Fradduus • Garan • Garenor • Gorenye • Greech • Haakonian • Harkonian • Hazari • Hirogen • Ilari • Ilidarian • Imhotep • Indign • Iscoy • Jellinian • Kadi • Kartelan • Kazon • Kesat • Kinbori • Kindir • Kmada • Kobali • Kohl • Kolaati • Kolhari • Komar • Kradin • Kraylor • Krenim • Kyrian • Ledosian • Lokirrim • Lyridian • Makull's species • Maldorian • Malkoth • Malon • Mari • Mawasi • Mikhal Traveler • Mislenite • Mokra • Mondasian • Monean • Morphinian • Motali • Mylean • N'Kree • Nasari • Nassordin • Nechani • Neyser • Nezu • Night Alien • Nihydron • Nijian • Norcadian • Numiri • Nuu'bari • Nygean • Nyrian • Ocampa • Omian • Ovion • Parein • Pathon • Peliorine • Pendari • Pensarkan • Ponea • Porcion • Pralor • Qomar • Quarren • Rakosan • Ram Izad • Ramuran • Repto-humanoid • Rewadian • Ridion • Rilnar • Sakari • Serosian • Sha'Kurian • Shivolian • Sikarian • Silver Blood • Skedan • Sky Spirits • Species 116 • Species 125 • Species 149 • Species 259 • Species 262 • Species 263 • Species 312 • Species 571 • Species 5174 • Species 5973 • Species 6339 • Species 10026 • Srivani • Swarm • Tabric • Tak Tak • Takarian • Takrit • Talaxian • Taresian • Tarkan • Tarkannan • Tauma • Telsian • Terkellian • Terrellian • Trabe • Trevin • Turei • Uxali • Vaadwaur • Varro • Vaskan • Vashnar • Ventu • Vhnori • Vidiian • Vohrsoth • Void alien • Vojean • Vok'sha • Vori • Vostigye • Voth • Wyngari • Wysanti • Xanno • Yallitian • Yax • Yudoo • Zahl • unnamed Delta Quadrant races and cultures