Evolution of Godzilla's Theatrical Appearance

Original Godzilla

First Appearance: Small arms, thick legs, dorsal plates, tiny pupils, fangs, and pointy ears.
Godzilla Raids Again: Thinner, longer arms, smaller head, larger pupils, teeth jut out.

King Kong vs. Godzilla: In color, plumper, lizard-like head, yellow eyes, no ears or fangs.
Mothra vs. Godzilla: Slimmer, wider head, smooth shiny brows, drops into sea.

Ghidorah, The Three-Headed Monster: Slimmer face, longer tongue, starts defending humanity.
Invasion of Astro-Monster: Thinner, more definition in dorsal plates, new dance moves.
Ebirah, Horror of the Deep: Less angry brows, new dance moves, battles giant lobster.
Destroy All Monsters: Slimmer, Mollica’ed face, consistent look through three sequels.

Godzilla vs. Hedorah: Opposes pollution monster, can fly backwards.
Godzilla vs. Gigan: Gains ability to speak, suit skin starts ripping, slim appearance.
Godzilla vs. Megalon: Shorter neck, round pig-nosed face, long-distance dropkick.

Various Films: Angrier expression, detailed muzzle.
Godzilla vs. Space Godzilla: Bulkier, less detailing, larger eyes.
American Godzilla (1998): Mutated iguana-larger dorsal spines, many offspring.
Godzilla 2000: Shorter, green jagged skin, sharp purple spines.
Giant Monsters All-Out Attack: Formed by ghosts, charcoal-colored skin, pure white eyes.
Godzilla Final Wars: Taller, smoother, slender, smooth slender build.
Shin Godzilla: Evolves rapidly from a light-colored, armless creature to a dark massive form.
Anime Trilogy: Muscular, tree bark-like texture, grows largest on-screen size.
2014 American Godzilla: Plump, jagged dorsal plates, wide feet, noticeable gills.
Godzilla: King of the Monsters: Taller, beefier, blunt tail tip, fiery look and power.