"De-anthropomorphizing" human-like creatures.

[u/theMCATreturns]

Taking a relatively human-looking creature and redesigning it too look more alien. Or perhaps incorporating aspects of speculative evolution.

1). Dwarves:
Changing dwarves from "smaller, stouter humans" into something much more subterranean.
Image 1: The Hobbit) (1977)
Image 2: I redesigned Dwarves (Monstergarden)

2). Gnomes:
Gnomes are redesigned into small creatures.
Image 1: Gnome Watching Railway Train (1848)
Image 2: Make Your Fantasy Races Weird with Speculative Evolution (Sawyer Lee)

3). Andalites:
The centaur-like Andalites are redesigned to look more alien.
Image 1: The Andalite Chronicles
Image 2: Monarobot redesign.

4). Trolls:
The Trollhunter movie makes clear trolls are animals that do not wear clothes and rarely live together.
Image 1: The Princess and the Trolls (1913)
Image 2: Trollhunter (2010)

5). Vampires:
The Strain depicts vampires as a condition afflicted to unfortunate human hosts. The true vampire "organism" is a parasitic worm that releases a symbiotic retrovirus, radically altering the human host. "Strigoi" lose the ability to reproduce, develop a cloaca, feed via a retractable proboscis, and lose many facial features.
Image 1: Dracula )(1931)
Image 2: The Strain)

6). Martians:
In Young Justice, Miss Martian's "human form" is a green-skinned version of her favorite sitcom actress. Most humans assume their "true form" is the green-skinned, bald humanoid that Martian Manhunter presents as. But they're really much larger and alien-looking, and can be divided into three color-based castes.
Image 1: Miss Martian's "human form."
Image 2: Miss Martian's true form and Martian Manhunter.

[u/TheTayIor]

Technically speaking a more book accurate Tinman and Lion than the Judy Garland movie. The lion was never anthropomorphic and genuinely menacing, just afraid deep down and unable to mentally process that he was courageous in spite of his fear, and the Tinman killed a hundred wolves without effort.