Blade is famous for being a vampire/dhampir who is a vampire killer. His life's goal is to kill all vampires off the face of the Earth. He's had a trilogy, a tv series, and countless appearances in comics.

Now he's getting a role in the MCU. Vampires were teased in Thor: Ragnarok by Korg to Thor. Now it's confirmed Blade will have his place with his 'mission' of killing vampires.

Vampires are called monsters and all need to be wiped out. Blade repeats this constantly and greatly enjoys killing vampires. It puts a smile on his face. He takes pleasure in every single kill he makes. And his end goal of killing all vampire kind is his dream, something that he believes will bring him true happiness and peace.

A vampire took his mother away from him, turning her after he was born. He was trained by vampire killers when they discovered he could survive in daylight and used him as a weapon to try to kill his paternal species. For this and the actions of some other vampires, he feels justified in the pursuit of killing all of them.

But there's a problem with this. The MCU has had, at the very least, two very defining plotlines in the MCU where killing people in mass numbers has been fought against and denounced by the protagonists:

The most well known and recent is Thanos in his attempt to make a 'stable and balanced' universe. Believing that the population the universe had couldn't sustain life he decided to wipe out half of it. When he did this, the survivors were traumatized and in constant mourning of those lost. Doctor Strange denounced the Mad Titan's plan in Infinity War.

The second, and the much more similar plotline compared to Blade and his goal, was in the first Thor film. The Frost Giants were secondary antagonists in the film. Using the Casket of Ancient Winters they (or some of them at the very least) wanted to freeze Midgard into a new ice age. Being stopped by Odin, centuries later the Frost Giants came into the conflict again. But this time, Loki deceived his people and using the power he manipulated into gaining tried to destroy his own race. Thor confronted him at this point. Thor himself wanted to originally kill all the Frost Giants, believing them to be a threat and to prove himself out of his own arrogance and hate. He wanted a war that would end their entire race, hoping for 'glory' and to make Asgard greater and himself greater. Through these actions, Odin stripped him of his power and sent him to Midgard to learn humility. With his time there, Thor realized his mistakes and succeeded in stopping Loki from destroying Jötunheim and causing the extinction of the Frost Giants and any/all other life in that realm. (Yes, what the Frost Giants did (or some of them did was wrong), but the extinction of their race wasn't the answer. Thor realized this, seeing how his warmongering would have led to genocide, and fought against this from happening.

What Blade wishes is a mix of what Thor originally wanted to do and what Loki almost succeeded in doing. He sees vampire kind as a threat, wanting to wipe them out to make the world 'better' and to prove himself 'better'. Yes, what some vampires may do could be/is wrong. Yet how does that make it right for their entire race to be killed? Blade's drive to kill all vampires is what would have happened to the Frost Giants by the hands of the former Thor and Loki by the end of the first film: genocide. The actions of some don't mean that the entire people should be hurt. Collectivism in such ways is dangerous as basing a punishment for an entire culture/race on how certain individuals/groups may act and associating it when an entire religion, gender, ethnicity, or species can/does cause racism, sexism, and fanaticism that drives certain people into acts of horrific violence. This is what Thor and Loki both believed and acted on, and this is what Blade believes about vampires and is trying to act on. It's an internalized bigotry for a species of individuals. Men, women, and children who want to survive and thrive. Yes, some may be individually evil. This doesn't mean the entire species is evil. Like with the Frost Giants, they are targeted with hate and fear. Perhaps some individuals should be stopped/killed, but to say the entire species should die is a view of dangerous perspective and entirely wrong. Vampires are men, women, and children who range in ages and ethnic backgrounds with individual beliefs and desires. The matter of them drinking blood is what their bodies need to survive. Humans need to take life to survive, whether animal or plant.

(One can argue the difference between a human life and that of an animal or plant. A vampire can also feed on animals and doesn't have to kill another living being to survive. Yes, there is a difference between human and life in another life. We're a different species yet we're individuals. Not all of us are good and not all of us are bad. Individually we vary in character and we want to survive and thrive. We take life to sustain life, but we don't always have to.)

Yes, I know this is fiction, but there is meaning behind it. Blade hates vampires, facing some who believe vampires are superior to all other life. (This is, of course, wrong. As it's severe collectivism in itself, seeing one species as better than another.) Ironically enough, this is similar to how certain humans believe certain group identities are superior to one another: white people are the superior ethnic race, men are fundamentally better than women, Christians are the most moral people/have the true belief of religion, (ironically) humans are superior to all other species, etc. This doesn't mean all individuals in these groups don't believe those severe and prejudiced views. And acting on beliefs of severe collectivism cause acts of terror and horror (which has been happening since practically humanity started, or not long after). It causes divisions that fill up with hatred that leads to violence and death.

Blade is not good or heroic in what he seeks. He is a monster, individually, not for what he is but for what he seeks. (And if were to decide the fate/death of an entire group/race based on the actions of certain individuals, by that belief...humanity should have been wiped out long ago.) And by placing Blade in the MCU, it seemingly goes from denouncing genocide...to glorifying it.

(This is my individual perspective on the matter of Blade and the problem he presents. There are other characters like him, ex. the various Van Helsings. Nevertheless, I hope this presented a thought-provoking discussion of the MCU and the position of Blade and vampires in it.)