I can't shake the feeling Kullervo was designed with the help of AI.

Kullervo fits too well with the aesthetic of the rest of Duviri (especially the conservation animals) to be AI-generated. His base helmet is also an allusion to Thrax.

With that being said, I think the reason he seems AI generated is that he's colored differently than other warframes. In order to match the duviri aesthetic, he has more blending of colors and less color separation, which is fairly common in AI stuff.

I like the design personally, but I kinda get where you're coming from.

I personally don't see it. The design and concept are right in line with other frames but with the Duviri design mixed in.

Duviri and everything related to it is quite heavy on fractal-like design and color blending/gradients. So I suppose I get where you come from because I've toyed long ago with fractal generation in GIMP but it's also a lot different than that.