Marvel have released a second teaser this week, this time warning "Best Beware My Sting" with a yellow and black color scheme.
Putting on our thinking caps, the most likely answer to this given the color scheme and "sting" would be the Marvel heroes Wasp or Yellowjacket.
Why the Wasp? Well "Best beware my sting" is a line from William Shakespeare's Taming of the Shrew, and it reads in full: "If I be waspish, best beware my sting."
Janet Van Dyne, a.k.a. the Wasp, hasn't been utilized much in Marvel Comics since the close of the Axis event. But given the upcoming Ant-Man & Wasp movie and the inevitable need for new series, this could signal a major return for the Wasp.
For those guessing Yellowjacket, while numerous people have used the moniker, the most notable one in comic books would be Hank Pym. After merging with Ultron in Avengers: Rage of Ultron, the character re-appeared recently in Uncanny Avengers #4 wearing Ultron as a suit of armor and saving the day. If it's his sting to be wary of, maybe "Best Beware My Sting" is a warning to evildoers.
For the larger world however, Yellowjacket could be best known as the villain Darren Cross (played by Corey Stoll) in 2015's Ant-Man movie. Cross too has re-appeared recently, in Astonishing Ant-Man.
This is the second Marvel teaser this week after Tuesday's "Dead No More" image.