Names to Run Away From Really Fast/Body Part

A form of Names to Run Away From Really Fast: Usually, this is the extremity they'll hit you with, or the one that's the most scarred. Blood, talon, skull, fang.

Anime and Manga

 * Gunnm: Caerula Sanguis, whose name literally means "blue blood," both a mark of her regal and elegant bearing and of her...shall we say...clinical status.

Comic Books

 * Jason Blood, to whom an actual demon from Hell is bound. He's extremely knowledgeable as a mystic and demonologist, and he's also immortal.
 * Sangre, of the Children of the Vault.
 * Bloodsport, the name of three Superman villains.

Film

 * The classic Captain Blood.

Literature

 * The Bloody Baron from the Harry Potter series, as well as a vampire named Sanguini.
 * Averted in the second series of Welkin Weasels novels, where one of the main characters is named Bryony Bludd, which is lampshaded by (wouldn't you know it?) a vampiric stoat. It's still a Meaningful Name, though; she's a veterinary surgeon (which within the series actually means a doctor to her fellow Talking Animals).
 * Rafael Sabatini's famous pirate, Captain Blood, started his career as Doctor Blood. It works either way! Notably, he was not bloodthirsty at all, and was a complex and sensitive man, so his name had a touch of irony to it... Which was completely lost in the movie, turning him into an uncomplicated Badass with an entirely appropriate name.
 * The crimelord who forms the main antagonist in Gene Wolfe's Nightside the Long Sun goes by the name of Blood. (In their city men all have single names that refer to animals or animal byproducts, like the protagonist Silk and his student Horn, but Blood is still an alarming name even in context.)

Professional Wrestling

 * The evil-sounding connotations of Blood as a name is what led a young, babyface pro-wrestler to switch from his real name, Richard Blood, to the stage name Ricky Steamboat (arguably the only example of a wrestler having a more Badass real name than stage name)

Tabletop Games

 * The Primarch of the Blood Angels Space Marines chapter in Warhammer 40000 was imaginatively named Sanguinus.
 * On the other hand, he was a formidable fighter but not an evil man -- or primarch.

Video Games

 * Lawrence Blood from Fatal Fury
 * Combine two dangerous names and you get Blood Falcon, Captain Falcon's Evil Twin from F-Zero X.
 * From The Curse of Monkey Island, there is Wally the evil pirate Bloodnose!
 * And combining this with the Xtreme Kool Letterz example below, we have Chaotic Evil Ax Crazy Psycho for Hire dwarf Korgan Bloodaxe
 * Ragna The Bloodedge. In actually, one of the sanest people around. But he has a fearsome One-Winged Angel form which fits the trope to a tee.
 * Blood Raven from Diablo II, the first boss you encounter. If you waltz into the Burial Grounds at LV 5, fresh form the Den of Evil, she will mop the floor with you.
 * Bloodmonster from the Nightmare, from the obscure Dada game 78641, a Targ Adventure,
 * Blood Drops from The Game of the Ages is a legendary warrior.

Web Comics

 * His name is... Raven Darktalon... Blood!
 * Girl Genius has a Bludtharst Heterodyne. Even if he is only mentioned once.

Western Animation

 * Sebastian Bludd, better known as G.I. Joe villain Major Blood.

Real Life

 * The Bloods, a notorious Los Angeles street gang.
 * In real life, the only person ever to get close to successfully stealing the crown jewels of England was called... Colonel Thomas Blood.
 * The "blood eagle," a particularly squicktastic Viking method of killing, which one source describes as "breaking [a man's] ribs and ripping his lungs from his back, where they continued to expand and contract in a motion that mimicked the flapping of the great bird's wings."

Anime and Manga

 * The Claw, from Gun X Sword.
 * Claw from Kimba the White Lion.

Comic Books

 * Klaw, sonic-handed enemy of the Fantastic Four.
 * Legion of Super-Heroes villain Starfinger.

Film

 * Goldfinger (...He's a man, a man with a Midas touch, a spider's touch...)

Literature

 * Once goes worse in the Song of the Lioness series, he's referred to as "Claw."
 * In Warrior Cats, several characters' names end in "-claw", but special mention goes to Tigerclaw.
 * In Neal Stephenson's The Baroque Cycle, one of Jeffreys' hired assassins is named Dick Gripp. Thankfully, Stephenson never went into how he kills people...
 * Artery, Vein, Spine and Femur in The Demonata.
 * Selena, Morzan's lover from the Inheritance Cycle, is nicknamed "The Black Hand".
 * Talon, the killer-for-hire in the Babylon Rising series.

Live-Action TV

 * Doctor Who once had a villain of the week named Mother Doomfinger. She killed people with, you guessed it, a tap of her finger.

Mythology

 * The Hekatoncheires (literally "the hundred-handed ones") from Classical Mythology, who, well...each had a hundred hands (and fifty heads).
 * Subverted with Chiron, the wise centaur who taught many of Greece's greatest heroes. His name means "hand," but it had more the meaning of a hand that guides and assists--literally a "helping hand."

Video Games

 * Deathclaws--Sneaks the "Death" in there as well. They're appropriately named though--you really don't want to screw with these guys.
 * Talon from Devil Kings.
 * Master Hand and Crazy Hand of Super Smash Bros.

Web Comics

 * An honourable mention must go the Hyena People from Digger, whose females have the following, friendly, lovable names; Grim- Eyes, Blood-Eyes, Blood-Tail, Shadebones... most female hyenas seem to have them. Even the benevolent ones have names like Boneclaw Mother, and the smaller less aggressive males names like Owl-Caller.

Web Original

 * Michelle Clore (sounds like "claw" in the right accent), the Big Bad of Kate Modern, a pun which was lampshaded on more than one occasion.

Western Animation

 * Klaw, main enemy of Inspector Gadget.
 * Claw chooses who will go and who will stay!
 * The Hooded Claw, that guy who's always trying to kill Penelope Pitstop.
 * The Claw, the Big Bad of Chuck Norris Karate Kommandos.
 * Talon  in Gargoyles.
 * He-Man and The Masters of The Universe villain Clawful.

Real Life

 * The Black Hand Gang and the craze in the early 20th century of referring to The Mafia in New York as the "Black Hands."
 * The predatory dinosaurs Deinonychus (terrible claw) and Deinocheirus (terrible hand).

Anime and Manga

 * Since 'kiba' is the Japanese word for 'fang', Kiba the dog-themed ninja from Naruto and Kiba the wolf from Wolfs Rain also qualify.
 * As does Kiba, though for whatever reason its protagonist doesn't share the title's name, instead he's called Zed. Weird.
 * Also from Naruto, there's Konoha's White Fang, Sakumo Hatake.
 * Hanma Baki from Baki the Grappler, whose name means "Wild Fang".

Literature

 * Fang from the Maximum Ride books.
 * Stalker Fang of Mortal Engines. That is all.
 * Subverted in Harry Potter, where Fang is a huge dog...who's a terrible coward.

Live Action Television

 * Averted with Cardinal Fang, possibly the least intimidating Inquisitor in history, in Monty Python.
 * Kamen Rider Double Fang Joker. It's first appearance on the screen has Shotaro trying to stop Phillip from killing Akiko!

MMORPGs

 * High Overlord Saurfang of World of Warcraft.

Other

 * Fang, a badly drawn dog who often appears in Chick Tracts. He barks and snarls at everyone, including demons.

Stand Up Comedy

 * Phyllis Diller's fictional stand-up routine husband.

Video Games

 * Fang The Sniper of Sonic the Hedgehog.
 * Helicopter-chucking Shootfighter Tekken titan Iron Kiba pretty much trumps all of the above, as a combination Complete Monster and Old Master. He's also larger and sturdier than most Hokuto no Ken/Fist of the North Star BigBads to boot.
 * Also, the Four Fangs from Fire Emblem 7.
 * Final Fantasy XIII's Fang: Wields a dual headed collapsible spear that can be separated and dual wielded. She's naturally the best attacker of the game

Web Comics

 * Marquise Spinneret Mindfang from Homestuck.

Western Animation

 * Fang, the thug with a spider for a head, from Teen Titans
 * And Fang the mutate from Gargoyles.

Anime and Manga

 * The Anti-Hero of Berserk.

Video Games

 * Guts Man from Mega Man.
 * *DUHN DUHHHHHHHHHHHHHHN! Guts Man's Ass!*
 * Mega Man 4's Skull Man, and his .EXE equivalent in Mega Man Battle Network.

Anime and Manga

 * Only known name of a revenge-driven serial killer in Fullmetal Alchemist who is out to get every single state alchemist and all those who get in his way via alchemical brain explosion. He's so effective at this that all high-ranking officers temporarily abandon their HQ in Central City where he was spotted and head out to the Eastern boondocks.

Comic Book

 * Scar the Stalker

Film

 * Subverted in John Ford's classic, The Searchers: Cicatrice, aka "Scar," does indeed commit a heinous act in killing a settler family and kidnapping the two daughters...but after that he spends his time either oblivious to (as in, living his life and leading his tribe) or running from the man who spends years hunting him down, Determinator Ethan Edwards.
 * Scarface

Live-Action TV

 * The Cylon Raider (and Jaws Shout Out) "Scar" from the episode of the same name of Battlestar Galactica Reimagined.

Music

 * "my assistant Scarface" in Jonathan Coulton's "Skullcrusher Mountain".

Video Games

 * Scara B. King in The Nameless Mod

Web Comics

 * Orphaner Dualscar from Homestuck.

Western Animation

 * Main villain of The Lion King
 * General Skarr in The Grim Adventures of Billy and Mandy

Wing
For the implications of Death From Above.

Anime and Manga

 * And Mooks should stay the hell out of Gundam Wing.

Toys

 * Blitzwing, Thunderwing, Darkwing, Wing Dagger, Wing Saber, and about a dozen other Transformers with "wing" in their name
 * Although the Decepticon Darkwing's name is less threatening, due to the unfortunate coincidence of being shared with a Disney duck character.

Video Games

 * World of Warcraft: Deathwing.

Anime & Manga

 * Naruto has the 9 Bijuu, aka Tailed Beasts, with immense amounts of power that increase exponentially with each tail. Their names are, in order of tails: Ichibi (a sand tanooki), Niibi (a fire-cat), Sanbi (a genjutsu turtle), Yonbi (a lava-breathing gorilla), Gobi (a dolphin-horse), Rokubi (a slug), Nanabi (an armored rhinoceros beetle), Hachibi (an ox with an octopus behind), and Kyuubi.
 * The Spiral: The Bonds of Reasoning series features a character named Eyes Rutherford.
 * The Primevals in Gao Gai Gar are all named after body parts, and each wields a power vaguely related to the part in question (Arm can punch people with gravity waves, Eye has precognition, etc.) Might not sound so scary until you realize that they can turn regular people into Zonders with The Virus, turn famous landmarks  into weapons and

Film

 * Several Bond girls, like Pussy Galore and Octopussy.
 * Biggus Dickus from Monty Pythons Life of Brian.

Literature

 * Alastor "Mad-Eye" Moody from Harry Potter.
 * The Right Arm from The Maze Runner series. It's a rebel organization devoted to fighting WICKED (which in itself is a Name to Run Away From Really Fast).

Mythology

 * Classical Mythology:
 * The Cyclopes ("circle-eye").
 * Argus Panoptes ("all-eyes," which points to his constantly watchful nature as well as Eyes Do Not Belong There).
 * The "Argus Monitor" is a medium-size lizard with a pattern that resembles eyes, which is why it was named for this mythical character. It's almost a subversion, though, since other monitor lizards are much bigger and more formidable than it is.

Western Animation

 * In the episode "The Headband" of Avatar: The Last Airbender, Sokka briefly wears a fake Badass Beard and adopts the alias "Wang Fire" (yes, Wang Fire, on a Nickelodeon cartoon) while posing as Aang's father. Although not particularly intimidating in the show, Wang Fire has become a Memetic Badass among fans, identified as the god of manliness and beards and as a separate entity from Sokka.
 * The Crimson Chin from The Fairly Odd Parents. Timmy also adopted the name "Cleft" (as in "cleft chin") while serving as the Chin's sidekick.