It’s the worst kind of identity theft. When NBC’s Grimm returns this fall for its fourth season, we’ll meet up with Gedächtnis Esser — aka Octo-Man — a nefarious new Wesen who can attach his tentacles to your head and steal all your memories, leaving you either dead or with severe amnesia. And we’ve got the very first look at the slimy fellow!

“This guy is ruthless and sophisticated — a high-tech spy who is involved with some highly placed military intelligence personnel,” says cocreator David Greenwalt. Though Octo-Man will claim many victims, he specifically targets that feisty new Grimm in town, Trubel (Jacqueline Toboni), and that, notes Greenwalt, “will leave her in a very dire state.”

Does this mean Grimm will suddenly be Grimm-free? Last May’s season finale ended with Det. Nick Burkhardt (David Giuntoli) tragically losing his superpowers. But, when the show returns (on Friday, Oct. 24), he and girlfriend Juliette (Bitsie Tulloch) will think they might be better off. “For Juliette, it’s been no fun being in love with a Grimm — in fact, it’s nonstop stress and constant risk,” notes cocreator Jim Kouf. “Would it be so bad if Nick didn’t get his powers back? It’s like asking Superman, ‘If you had the choice, would you stop being a superhero, marry Lois Lane and live normally — and happily ever after — in Kansas?'”