WarJay77 on Sep 1st 2018 at 9:39:49 PM
Last Edited By:
WarJay77 on Jan 4th 2019 at 11:55:32 PM
Page Type: trope
Blood. Everyone knows what it is- it's red, full of iron, and carries oxygen through or body. Sometimes this isn't the case. Aliens, for example, have Alien Blood, and some creatures in real life have blood of a different color due to their biology. Then there are these cases.
Contrary to the above, these characters are still biologically normal, whether they're humans or other animals, but their blood is much stranger. Some property will be different; the color, the elemental composition, even the function in some cases. What matters is that this blood is in the veins of someone who would otherwise be considered completely normal within the universe of the story.
Most often this has a connection to the supernatural, where people with this odd blood have some relation to otherworldly things while still being human themselves. In fantasy settings, this might be considered normal in-universe for certain people while still being unique and relevant, granting powers or being a status symbol.
In more scientific settings, these characters may instead be associated with technology, often being Cyborgs- biologically human, but with added traits that can apparently affect even their blood.
If the blood itself is dangerous, it can be used for Bloody Murder.
See also Bizarre Human Biology, which can overlap with this in cases where the weird blood is used in conjunction with a person having other unusual traits. Not related to Blue Blood, but the weird blood can in fact be blue and might be a symbol of status in and of itself. See My Blood Runs Hot for those with literally hot blood.
- Red Queen: Society is split between two groups; the normal people with red blood, and the people who have silver blood and supernatural abilities, making them the ruling class. Interestingly, the protagonist has powers despite having red blood, making her blood unusual in-universe due to the circumstances.
Live Action TV
- The 100: Grounders born with black blood (called "Nightbloods") are potential successors to the position of Commander. A flashback episode reveals that Nightblood came about when a scientist developed a serum that genetically modified her blood to metabolize radiation at much higher capacities than normal people. Other than this, Nightbloods are functionally human.
- New World of Darkness: Some non-supernatural humans have "residual spirit energy" that imbues their blood with Essence that's released whenever their blood is spilled. Since a renewable source of Essence is hugely valuable to Spirits, this can be a huge bargaining advantage, or it can paint a target on their back.
- Pathfinder: Black Blood is a strange Necromancy-infused substance that accumulates in a lake Beneath the Earth. Exposure usually infects and mutates creatures, but some rare bloodlines have absorbed and adapted to it, so people are born at random whose blood runs thick, black, and frigid.
- Inverted in Homestuck: In a world where Trolls' social status, lifespan, and supernatural abilities are determined by their blood color, Karkat Vantas stands out as having unique "mutant" human-red blood. It's a source of justified Freakiness Shame for him, since it means that his life would be in danger if anyone found out. It happens that Troll society collapses before anyone does find out, but it's still a sensitive topic for him.
- The King of Fighters: Lin of the Hizoku clan has his blood type listed as "poison". He's able to poison his opponents by smearing/injecting them with his blood.
- BlazBlue: Tager's blood is apparently natural oil. Justified by his Cyborg nature.
- Portal 2: One of the recorded messages from Cave Johnson mentions test subjects having their blood replaced with gasoline, aparently without their knowledge. So if they get injured and start bleeding, they shouldn't be surprised gasoline comes out of the wound.
- Hanna Is Not a Boy's Name: Ples Tibenoch bleeds an odd mixture of blood and oil. The comic was orphaned before it was explained, but he's strongly associated with clockwork and suffers from some Jekyll & Hyde duality, so it might be a sign of some non-human components affecting his psyche.
- In Everyman Hybrid, the boys discover their blood is apparently radioactive in the same way the monsters they're dealing with are, as a device that "ticks" when Slender Man is near does the very same thing when exposed to a droplet of Evan's blood. Despite this, they're functionally human despite going through some very strange circumstances.
- Used as a quick gag in in The Simpsons. A group of children accuse Moe Szyslak of being a troll on account of his hideous appearance and Moe claims 'I bleed red just like you'. He pulls out a pin and pricks his finger only for a drop of green blood to appear and Moe adds nervously 'the first few drops are green'.
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