Most Violent Fictional Extraterrestrial Species

The Top Ten
1 Cthulhu Cthulhu is a fictional cosmic entity created by writer H. P. Lovecraft and first introduced in the short story "The Call of Cthulhu", published in the American pulp magazine Weird Tales in 1928. Considered a Great Old One within the pantheon of Lovecraftian cosmic entities, the creature has since been... read more
2 Xenomorphs The Alien (also known as a Xenomorph XX121 or Internecivus raptus, or simply a xenomorph) is a fictional extraterrestrial species that serves as the title antagonist of the Alien film series.

You're Pretty Much Toast When They Appear Near You

3 Yautjas
4 Critters
5 The Blob
6 Slither Alien
7 Clover
8 Metroids
9 Galrans (Beast King Golion)
10 The Engineers

The Ones From Prometheus?

The Contenders
11 Deathcula (Sei Juushi Bismarck)
12 Facehuggers
13 Kathuga
14 Space Godzilla
15 Neomorph

They Are Actually WAY More Aggressive Than The Xenomorph

16 Headcrabs
17 Rancor
18 Daleks The Daleks are a fictional extraterrestrial race of mutants principally portrayed in the British science fiction television programme Doctor Who.

They are machines.

19 Romulans
20 Manti
21 Elder Things
22 Pennywise the Clown It (sometimes capitalized as IT), more commonly known as Pennywise the Dancing Clown, is the titular main antagonist of the novel, its 2017 film adaptation and the 1990 TV adaptation. It was portrayed to be a shapeshifting and malevolent entity millions (possibly billions) of years old, and with no ...read more.
23 Byrus
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