Shape Shifting – The ability to change your shape and/or appearance but not mimic the power and special qualities of the object or person or animal they appear to be. A shape shifter may take on the appearance of Superman but does not necessarily have any of the superpowers of Superman.
Chameleon Boy (DC) can imitate the appearance of almost any human or creature imaginable.
Chameleon Collie (DC) takes on various shapes in Superboy V1 #131.
The Chameleon (Marvel) uses masks and other technology to look like other humans.
Mystique (Marvel) is a shape shifter that has been a prominent character in the X-Men titles (Official Handbook of the Marvel Universe V1 #7).
Proty (DC) is one of a race of shape shifters (DC Who’s Who #18).
Shape Shift is a shape shifter in the Invincible Universe (Official Handbook of the Invincible Universe #2).
Anything (Malibu), unlike most shape shifters, can turn into none humanoid forms like a wall or liquid (1993 SkyBox Ultraverse).
Bloxx (Ben 10)
Ship (Ben 10)
Changeling – D&D 3.5 – Monster Manual III
Changing Man (Marvel) – Tales of Suspense V1 #8
Doppelganger – D&D 4th Edition – Monster Manual 1
Face Stealer – Creature Collection II. Dark Menagerie
Fatman the Human Flying Saucer #1 (1967)
Greater Doppleganger – TSR 2158 Monstrous Compendium Annual Volume 2
Greater Leucrotta – TSR 2158 Monstrous Compendium Annual Volume 2
Greater Mimic – TSR 2158 Monstrous Compendium Annual Volume 2
House Hunter Mimic – TSR 2145 Monstrous Compendium Annual Volume 1
Imposter (Savage Dragon)
Lurch (Savage Dragon)
Manga (Savage Dragon)
Mimic – D&D 4th Edition – Monster Manual 3
Mirror Fiend – Creature Collection II. Dark Menagerie
Peltast – TSR 2158 Monstrous Compendium Annual Volume 2
Super Disguise – Archie’s Madhouse #37
Tiger Boy (Harvey) – Unearthly Spectaculars #2
Tsathoggun – Field Guide to Creatures of the Dreamlands
The Young Gods include Mindsinger (Marvel) in Spectacular Spider-Man Annual V1 #8.
Some kitsune, fox in Japanese, can change shape and look like a beautiful girl as shown in Sandman – The Dream Hunters (2008).
Chamelon – Second Doctor Sourcebook
Doppleganger – TSR 2140A Monstrous Manual
Jimmy Olsen – “The Planet of the Capes!” – Superman’s Pal #117
Judge Dredd – “Spooks” – 2000 AD #1059
Judge Dredd – “Wot I did during Necropolis” – 2000 AD #709
Loup de Noir – TSR 2145 Monstrous Compendium Annual Volume 1
Mimic – TSR 2140A Monstrous Manual
Nikolai Dante – “The Romanov Dynasty” – 2000 AD #1043
Uthraki – TSR 2166 Monstrous Compendium Annual Volume 3
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