Dr. Otto is a mysterious villain with a hand growing on top of his head.

A mysterious villain who has a past and a grudge with Narutaki and Narutaki's father.

But one day, the Crystals were stolen by a mysterious villain, turning the Dragons into ferocious beasts.

She's hunting the mysterious villain known simply as Lady in order to avenge her murdered tribe.

Unfortunately, they somehow get pulled into the game after a mysterious villain activates the laser.

As Stan is talking on his monitor, a mysterious villain enters his room and the monitor turns off.

Then a mysterious villain, later identified as Bee Sting, says she will come after the superheroes.

The lead suspect is a mysterious villain by the name of Dr. Nefarious.

He was apparently killed by a mysterious unknown villain while attempting to warn the Justice League of a plot against them.

The only thread remaining is our mysterious villains.