Black Widow (Yelena Belova) - Marvel Comics

Wait a second...isn’t the Black Widow an Avenger?
And a redhead?
I know she started out as a bad guy in the comics but she got over it right?
Well....yes.
This is the second Black Widow, Yelena Belova.
She was created by Paul Jenkins and Jae Lee and made her first appearance in 1999 in Inhumans #5.

After the original Black Widow (Natalia Romanova / Natasha Romanoff) went rogue, the Soviets replaced her with another woman trained by the same people that trained Natasha.
Of course one of the first things that Yelena did was to go after Natasha to kill her and take the name "Black Widow" officially.
But despite the fact that she was younger and she thought in better shape and trained better, she couldn't take the original Widow down, which bummed Yelena out to no end.

Yelema is an Olympic level gymnast, highly trained in martial arts and in weapons.
If we dont count the time she was the Super-Adaptoid, (and please, let's don't) she has no superpowers.

Outside of comics, the only place that Yelena has appeared so far is in the 2006 video game Marvel Ultimate Alliance.

Oddly enough, with blonde hair, Scarlett Johansson looks more like Yelena than she does Natasha.
But if they ever do Yelena in live action....I vote for Katee Sackhoff

Black Racer - Marvel Comics

Continuing on with Marvel Comics seemingly endless supply of snake based characters, we have Black Racer.
She is not to be confused with Jack Kirby's Black Racer, a character in his "New Gods" pantheon.
Black Racer was created by Mark Gruenwald and Tom Morgan and first appeared in 1988 in Captain America #337.

This lady is Ariana Saddiqi, a mutant with superspeed.
Yeah that’s pretty much it.
Superspeed.
And she seems to be in the Quicksilver range, nothing like the Flash.
Well she does have some limited superstrength.
You would have to I guess, to be able to handle superspeed.

Of course since she is snake themed, she has been a member of both the Serpent Society and the Serpent Squad.

One odd thing about her is that her race changes.
She has been drawn as both Caucasian and African-American in different books (her green hair when she is in costume is a wig).
Judging from her last name, is it possible that she is actually Middle Eastern?
It looks like Marvel would get that together.

Black Mamba - Marvel Comics

Marvel Comic's Black Mamba.
Boy...Marvel really does love the snake-themed villains dont they?
Black Mamba was created by Mark Gruenwald and Ralph Macchio and first appeared back in 1980 in Marvel Two-in-One #64.
She is a bit more naughty than other supervillains...she was a call girl before she got a costume.

In the comics she was created by Roxxon Oil Company (yes, an oil company was an evil organization) and was a founding member of the Serpent Squad, which later changed it's name to the Serpent Society.

Now here is Mamba's rather unique power.
She can scan a person's mind and pick out a loved one.
Then she projects extra-dimensional Darkforce energy around the victim and it crushes them, all they while they think that they are being embraced by said loved one.
She can also use the Darkforce to surround herself and change her appearance.

Black Mamba was a founding member of BAD Girls, Inc., a founding member of Serpent Squad (Serpent Society) and also a member of the Femizons, the Masters of Evil, the Secret Avengers and the Women Warriors.
She does get around.

Black Lotus - Marvel Comics

Black Lotus is a Marvel supervillainess that could be a whole lot more.
But I suppose they do need background players because everyone cant be a star right?

She was created by Ralph Macchio and George Pérez and made her first appearance in Marvel Fanfare #11 in 1983.
Black Lotus is supposed to be a pretty major assassin.
But as comic book assassins go, you rarely ever see them actually kill anyone.

Lotus is Japanese and her mother was one of the five women in the original "Nail", which was an elite ninja strike team used by The Hand.
They were all killed.
Really doesn’t sound too awfully elite.....

Anyway, Lotus was first seen as a freelancer trying to take down Black Widow with five other mercenaries.
She did get one good shot in on the Widow (while her arms were pinned) but Natasha turned around and took them all out.

Black Lotus was one of the women in Superia's all-female army, the Femizons and is in the modern incarnation of The Nail.
And she actually had a fairly large role in the Shadowland: Daughters of the Shadow series, so maybe she has been done justice by Marvel after all.