Ben 10 Fan Fiction Wiki
Ben 10 Fan Fiction Wiki

Seismic Constrictor is a Nemetrix alien that first appears on Earth-68. Its species is the predator species of Merlinisapiens.

Seismic Constrictor
General Information
Species Unknown
Home World Unknown
Body Snake
Powers and Abilities
Abilities Enhanced Agility
Enhanced Reflexes
Enhanced Speed
Vibration Detection
Tail Mouth
Prehensile Tail
First Appearance Monster on the Hunting Ground
Predator/Prey ChamAlien (Earth-68)


Seismic Constrictor is a 10 foot long snake alien, the head and upper body being white, with red insect pattern eyes, and its lower half is pure black. Its scales are jetted out and smooth on the belly, designed to detect vibrations. Its face has no mouth, and it’s width is two feet long all the way down, except at end of the tail, which comes to a forked tongue tip. The Nemetrix is on its collar. 

Its lower half of its body have scales around the tail that open up like frills, which form a mouth. Inside the mouth are sharp scales, which act like teeth. The forked tongue tip is actually a tongue.

Powers and Abilities

As a snake, Seismic Constrictor has enhanced agility and speed, along with lightning fast reflexes. It has a strong grip, and wraps around its prey to squeeze them. Its scales sticking out can prevent its prey from slipping out of its grip.

Its scales sticking out primarily are used to sense vibrations. Its eyes don't function for "seeing," but it creates a picture of its world through the transmission of vibrations. It can detect any movement made on ground.

The lower half of its body opens like a mouth, which it uses to bite its foes. It has a prehensile tail.

It has enhanced hearing.


Seismic Constrictor can only detect vibrations from its scales touching the ground.

Its main head has no mouth, so its head is very vulnerable.

Dimension 1 (John Smith 10)

By Khyber's Pet

 Dimension 40 (Ya-Mi-Oh!)

Seismic Constrictor appears as a predator in the Nemetrix.

By Skurd

Cybeast Seismic Constrictor (John 23: Megaman)

Cybeast Seismic Constrictor is the version of Seismic Constrictor in Dimension 23, used by Treble. It has cybernetic enhancements on its back and head.


Dimension 763 (Omnimania)

Seismic Constrictor is available to those who wield the Nemetrix.

By Nails


  • Seismic Constrictor's name is based of a Boa Constrictor, and Seismic, which means Earth.
  • Seismic Constrictor's body was inspired by the Pokémon Zygarde 50%, while its coloring was inspired by Zygarde's shiny coloration.
  • Its tail mouth was inspired by the Pokémon Girafarig.
  • Its abilities are based off Toph's Seismic Sense from Avatar the Last Airbender.