Body Part Disembodied – The ability to exist as a disembodied body part. This is only a superpower if the disembodied state makes the disembodied entity more powerful. Giant eyes generally can see more and/or shoot rays. Giant hands can punch with superhuman strength and of course hands are pretty strong and a blow to a hand is less effective than a blow to the stomach or head. This is a good example of a power that can be identified inductively. Comic books are filled with powerful disembodied body parts but I think this is the first and for now the only list that includes this state of being as a superpower.
Jack Jawbreaker is a disembodied arm that goes around punching crooks while yelling “Jack Jawbreaker Fights Crime!!”.
The Hand appeared in Speed Comic #13 (Harvey) and mostly fought crime by pointing not punching.
Superboy (DC) had to fight some disembodied arms in Superboy V1 #131.
Devil’s Heart (Marvel) was a giant disembodied heart that was a foe of Dracula (Marvel Legacy: The 70’s Handbook #1)!
The Blue Beetle fought a disembodied eye, the Eye of Horus, in Blue Beetle V3 #54 (Charlton).
The Eye (Centaur Publications) is a disembodied eye that floats around gaining information which it shares with the appropriate person for the cause of justice. If a giant eye started talking to me I would of course not run in terror but have a good chat instead (Keen Detective Funnies V1 #23).
The human race must deal with a jeweled disembodied eye in Strange Adventures #25 (DC).
There is a disembodied Evil Eye in Strange Tales #4.
Basil Wolverton has created a particularly disturbing race of Venusian disembodied eyes in Eye of Doom, Mystic V2 #6 (Atlas).
Doctor Solar fights a disembodied hand in Doctor Solar, Man of the Atom #08 (Gold Key).
Krypto (DC) fights a couple of disembodied hands created by Mister Mxyzptlk in Action Comics #467.
Luthor (DC) battles Batman in Batman V1 #130 with a giant mechanical disembodied hand.
Silver Age anthologies loved disembodied hands (Adventures into Terror #5 (Marvel), Forbidden Worlds #102 (ACG), House of Mystery V1 #45 (DC), House of Secrets V1 #1 (DC), Journey into Mystery #1 (DC), Strange Adventures V1 #110 (DC), Strange Adventures V1 #168 (DC), Strange Adventures V1 #22 (DC), Uncanny Tales #20 (Atlas).
In Mister Miracle V1 #10, the Head gives the hero a hard time.
In Adventure Comics V1 #292 (DC), Lex Luthor uses technology to follow Superboy around Smallville as a disembodied head.
The Brain in Adventures into Terror #4 and #6 (Atlas) is actually a disembodied head and is still waiting to return.
Occasionally disembodied body parts appear but we then discover the bodies are hidden. In Action Comics V1 #284, Supergirl enters the “Valley of Hands”!
Supergirl battles giant feet, actually part of the Infinite Monster, in Action Comics V1 #285. Maybe the Valley of Hands in the previous issue generated a lot of fan mail!
The Brain-Child is a disembodied brain that inhabits the Savage Dragon Universe.
Black Bolt #3 (Marvel)
Donovan’s Brain (1953)
Futurama – Heads in a Jar
Handy – Little Dracula #3 (Harvey)
The Brain of Colonel Barham – Outer Limits
The Running Ghost – Haunted Horror #27 (IDW)
Thing – Addams Family
Triskelions in Who’s Who in Star Trek #2 (1987)
The Flameskull can launch fire balls (D&D 4th Edition – Monster Manual 1).
Crawling Claws – WTC11832 – Monsters of Faerun
Crawling Claw – TSR 2140A Monstrous Manual
Deryth – Creature Collection II. Dark Menagerie
Gallows Eyes – Creature Collection II. Dark Menagerie
Lumi – D&D 3.5 – Monster Manual III
Lurking Strangler – D&D 3.5 – Monster Manual III
Menace of the Floating Head – Tales to Astonish V1 #8
Arcane Head – TSR 2166 Monstrous Compendium Annual Volume 3
Dept of Monsterology – The Trouble with Harry (Renegade)
Herman von Klempt in B.P.R.D. The Devil You Know #1 (Dark Horse)
Iron Man Brain – Dark Avengers #189
Judge Dredd – “Crusade” – 2000 AD #937
Judge Dredd – “Part Exchange” – 2000 AD #903
Mambo – “The New Flesh” – 2000 AD #890
ORCOM – Outcasts #10 (DC)
Orpheus (Vertigo) – The Sandman-Fables and Reflections V6
Revere – “Finders Edge” – 2000 AD #745
Sam Slade Robo-Hunter – “Escape from Bisleyland” – 2000 AD #753
Slaine – “Lord of Misrule” – 2000 AD #958
“The Hunting of the Veks” – Tales of Telguuth (2000 AD)
“The Monster Maker” – Challengers of the Unknown V1 #2
The Twilight Zone #16 (Gold Key)
Valla deals with person with a disembodied head in Dark Fang #1 (Image)
Vargouille – TSR 2016 Monster Manual II
Vector 13 – “Chill Out” – 2000 AD #1079
Ward of Swords – Sandman Presents-Petrefax #3 (Vertigo)
Weird Fantasy #13 (EC)
Witch World – “The Anatomist” – 2000 AD #1056
Robot (Image) has been turned into a brain in a jar as a precaution against his evil genius in Invincible #142 (2017).
Tath Ki (Marvel) has been decapitated by Warlock in Infinity Countdown Prime #1.