I think my favorite thing about season 1 of Netflix’s Jessica Jones was the villain Kilgrave. And yes, partially that’s because he’s played by David Tennant (oh Doctor my Doctor), but his mind control superpower also makes him a particularly nefarious villain. Kilgrave robs his victims of their free will. When he tells you to do something—like cut your own arm off, or shoot your parents—you do it, and it doesn't matter how much you don't want to.

Another comic adaptation I'm fully obsessed with is AMC's Preacher. The titular Preacher, Jesse Custer, gains a mind control ability very similar to Kilgrave’s after being possessed by a cosmic being known as Genesis. This “Word of God” forces others to obey his commands. The details of the two abilities are different. Kilgrave’s is caused by a virus, meaning it's possible to become immune, as Jessica Jones is in the series; Jesse’s power is so far undefendable, even working on vampires and angels. Jesse can choose when to use his power, while Kilgrave’s is on all the time; Kilgrave's commands expire, while Jesse’s seem permanent. Functionally, though, the two abilities are the same: They speak, you obey.

Jadzia Dax’s death in episode 6.26 of Deep Space 9 (“Tears of the Prophets”) is one of the few scenes from the series I have clear memories of watching as a kid. It was shocking, and crushing, on the first view—this is Star Trek, after all, not a show generally inclined toward killing off its main characters, and Jadzia was far from a red-shirt. I could never warm up to Ezri Dax my first time with the series. Like Worf on the show, I looked at her and could only see how much she wasn’t Jadzia.