Ranking Fictional Scifi Worms:

GOA'ULD from Stargate
Let's see. Megalomaniacal space worms that crawl in through your mouth and attach to your spine, absorbing your personality and piloting your own body with you in the back seat unable to do anything about it. Oh, and also they pretend to be gods. Absolute A tier villain. Creepy as fuck.
🪱🪱🪱🪱 4/5 worms

THRESHER MAW from Mass Effect
Despite the fact that these colossal, aggressive subterranean carnivores can be found all over the Mass Effect universe, I actually had to look up what they're called because in my mind they're just so similar to the sandworms from Dune. F tier. Get your own worms, Mass Effect.
🪱 1/5 worms

SHAI-HULUD from Dune
Speaking of, absolute god-tier worm here. Colossal, desert-dwelling worms that thrive in the spice sands of Arrakis. Nearly indestructible. Can grow to be hundreds of meters in length. Shrouded in myth and legend. Highly territorial. And attracted to vibrations on the surface. S-tier. Careful how you walk, Fremen.
🪱🪱🪱🪱🪱 5/5 worms

GRABOID from Tremors
Blind, desert-dwelling carnivorous worms that hunt by detecting vibrations on the surface. Hmm, where have I heard that particular description before? Although at first glance the Graboids may seem like yet another knockoff from Frank Herbert's Dune, what sets these monsters apart is the fact that the worm is actually just the juvenile stage in their life cycle. Leave them alone long enough and they'll pupate into two-legged "Shriekers" and then finally flying "Ass-Blasters". And yes that's the official taxonomic name. C-tier.
🪱🪱 2/5 worms

SARLACC from Star Wars
Over a hundred meters long, with most of its body buried in sand except for their long, beaked tongue. These worms don't exactly hunt, per se, but rather lie in wait for any passing prey to fall into their sandy pit, to eventually be devoured by the mouth at the bottom of it. Much like a pitcher plant or Venus fly trap. Patient and deadly. Once ate Boba Fett but he got better. A-tier. Absolutely iconic.
🪱🪱🪱🪱 4/5 worms

TRILL SYMBIONT from Star Trek
The Trill are a humanoid species native to the Alpha quadrant. A small portion of their population harbor a symbiotic species called a Symbiont. These worms grant the Trill extraordinary access to shared genetic memories going back generations. Such "joined" Trill have a personality that is a synthesis of both beings. S-tier. Dax said trans rights.
🪱🪱🪱🪱🪱 5/5 worms

SANDWORMS from Beetlejuice
Giant black and white striped worm-aliens who reside on Titan, one of the moons of Saturn. The most prominent part of a sandworm is the second head residing inside the mouth of the "outer skin". Also they can eat ghosts. It sounds like it absolutely should not make a damn lick of sense but somehow it does. Maybe you had to be there. B-tier. Beetlejuice. Beetlejuice.
🪱🪱🪱 3/5 worms

ALIEN CHESTBURSTER from Alien
The parasitic infant stage of the unstoppable, nearly invincible Xenomorph in the Alien franchise, known for violently erupting from a host's chest after being implanted by a Facehugger. This, the third stage in the Xenomorph lifecycle, matures rapidly, eventually bursting directly out of the body of the host, killing them instantly. S+++-tier. Scared the absolute piss out of me as a kid. Still does.
🪱🪱🪱🪱🪱🪱 6/5 worms