HIVEMIND ELITE CHOICES
TYRANID WARRIORS (METAL)
TYRANID WARRIORS (PLASTIC)
TYRANID WARRIORS (METAL)
The old, bulky metal Tyranid Warriors had only Boneswords and claws for weaponry. The slimmer, multipart plastic Tyranid Warriors of old had the option of Boneswords or Deathspitters. Then, the Third Edition of Codex: Tyranids came out and Tyranid Warriors were given access to stuff like Barbed Stranglers, Lash Whips, and Devourers. Thus, new multipart metal models were sculpted (shown last).
PURESTRAIN GENESTEALERS (METAL)
PURSTRAIN GENESTEALERS (PLASTIC)
Most folks got their first taste of Genestealers through Space Hulk (of which we all have fond memories). In fact, Space Hulk came with so many plastic Genestealers that players often decided to collect Tyranids just 'cause they had so many of the critters already. In addition to the classic plastic sprues, metal Purestrain Genestealers with plastic arms were produced to offer a bit of variation within broods.
THE LICTOR IS BORN
Something called a Lictor snuck onto the scene during Third Edition of 40K, and the and 41st millennium just hasn't been the same since.
ZOATS!
At one point, the Tyranid Hive Mind enslaved a strange group of organisms called "Zoats." They were big, they were goofy, and they're extinct.

Armies of the Warhammer 40,000 Universe
Black Templars
Dark Angels Orks
Catachans
Dark Eldar Space Marines
Chapter Approved
Eldar Tau
Chaos Space Marines Imperial Guard Tyranids
Daemonhunters Necrons Witch Hunters