Ok, a few things I noticed during the trailer: 1: Acht is German for Eight, so maybe Dedf1sh is an alternate version of 8??? 2: During the Pearl’s pallete menu, it says we can increase the run speed (or swim speed i forgor 💀) for INKLINGS AND OCTOLINGS, even tho it’s only 8, so is it possible Agent 4 makes an entrance here too? 3: The big Black and Red tower thing at the end looks like the Toaster boss from Splatoon 1, 2, and Octo Expansions Story Mode That’s all I noticed, and I’m so hyped for Side Order!!!!
Acht's name was confirmed as Ahato back in HaikawaWalker (with Ahato being how you would pronounce/write Acht in Japanese), and Dedf1sh was notably only designed after OE was complete, because originally the tracks were disjointed and weren't meant to have a common composer. While it's possible they planned it out ahead this far, I'd doubt it. Don't forget the "Eight" is a common motif in Octoling/Octarian names already, i.e. DJ Octavio or Turquoise October.
The fact that Ted knows what murder drones is at 0:09 feels amazing to me and @Snickers. Or maybe Ted has no idea who glitch is and what they do. However is Ted does know abotu Murder Drones that's awasome bro.