Yes, Krang will be making an appearance in Teenage Mutant Ninja Turtles: Out of the Shadows. We know this because Michael Bay had an exchange with ILM during an interview with Rolling Stone that confirms Krang’s appearance—with a few changes.
Pablo Helman, a visual-effects supervisor who worked on the Star Wars prequels, appears onscreen and shows Bay the latest version of Krang, a new-to-the-movies villain who is, essentially, a disembodied brain inside a giant robot. “So we’ve eliminated the tentacles,” Helman explains. “Is it too monster-ish?”
“He could have some tentacles,” says Bay. “I just don’t want them coming out of the side. He looks like a stupid octopus.”
We also know this because there are pictures of the Technodrome playset and upcoming figures that include Krang, Bebop, Rocksteady, and Shredder.
Check those out below.
Toy photos via Technodrome User DVD23.