When Star Wars: The Force Awakens hit movie theaters back in 2015, fans of the franchise fell in love with the new droid BB-8. The adorable orange and white BB unit rolled its way into the Resistance as Poe Dameron’s astromech and trusted companion. Its story paralleled that of R2-D2; with a mission to deliver a clue of Luke’s last known whereabouts to General Organa and the Rebellion.

BB-8 is a key member of the Resistance, and with its big heart and even bigger personality, provided great comic relief  — not to mention it’s also very, very cute. Rian Johnson once joked he was the “Buster Keaton of the The Last Jedi.” As a result of BB-8’s breakout stardom, it came as no surprise when a darker and more evil BB unit arrived during the run up to Star Wars: The Last Jedi. Fans were very excited to see what the movie had in store for the sinister new droid known only as BB-9E.

Sporting a flat head, a black and chrome body, and distinctly more threatening beeps and boops, BB-9E is the anti-BB-8. A soldier for the First Order, BB-9E is unequivocally an evil little dude and yet there’s something about its roly-poly body that you can’t help but love. As a result of this, BB-9E has become the adorably evil droid that has rolled its way into our hearts.

Here are the 15 Things You Never Knew About BB-9E.

15. BB-9E’s Nickname On Set Was “BB-H8”

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Nicknames and monikers are nothing new in the Star Wars canon, especially in the early stages of shooting when everything was kept top secret. Being BB-8’s evil twin, the sinister BB-9E earned himself a great nickname on the set of The Last Jedi.

Director Rian Johnson revealed a glorious tidbit of trivia over the summer after BB-9E hit the internet. An article on Twitter brought up the possibility of The Last Jedi possibly being the cutest edition of the franchise ever, due to the incorporation of the Porgs and now the evil little droid known as BB-9E. Johnson replied by saying: “Just be thankful we didn’t stick with his obscenely adorable on set nickname, BB-H8.”

While some people think BB-H8 would have been a much better name for this little ball of terror, his final name is equally sinister, given what the “E” in BB-9E actually stands for.

14. The “E” in BB-9E Actually Stands For “Evil”

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This one has yet to be disputed by anyone from the Star Wars camp. This rolling menace earned its name for one simple reason: it  is pure evil. It is also an upgraded version of BB-8 — BB-9 — and just in case you weren’t sure by looking at it, the E is thrown in there for extra flair and a touch more evilness.

Of course this is just conjecture, but it would be pretty awesome if it was confirmed. When it comes to naming droids, the letters in their titles are not as arbitrary as ordinary moviegoers might assume.

R2-D2 actually stands for Reel 2, Dialog Track 2, which is an homage to George Lucas’s 1973 movie American Graffiti. C-3PO on the the other hand is theorized to reference the post office which stood in Lucas’ hometown.