I’m not gonna dig up the text in the book, but according to the Fandom wiki, Hookwolf’s eyes are human:

https://worm.fandom.com/wiki/Hookwolf

Hookwolf’s eyes still remain human, but are protected by a shifting screen of blades.

kagis

https://parahumans.wordpress.com/2012/06/20/interlude-11e/

Orders given, Hookwolf drew the majority of his flesh into a condensed point in his ‘core’, felt himself come alive as more metal spilled forth. Only his eyes remained where they were, set in recessed sockets, behind a screen of shifting blades. He was half-blind until the movement of the blades hit a rhythm, moving fast enough that they zipped over the surface of his eye at speeds faster than an eyeblink.

Technically, he should probably look larger than a human, since his body is still intact inside.

tries in Stable Diffusion

It really wants to give me yellow eyes for wolves.

pokes around more

https://lemmy.today/pictrs/image/5dc1b764-1319-47ae-a6b8-6889f7f72e50.png

wolf made of hooks and barbs, steel, standing on a street,night,(human blue eyes:.3) Negative prompt: (yellow eyes:.3) Steps: 20, Sampler: DPM++ 2M, Schedule type: Karras, CFG scale: 7, Seed: 7, Size: 1024x1024, Model hash: ebf42d1fae, Model: realmixXL_v15, Token merging ratio: 0.5, Version: v1.9.4-169-ga30b19dd

I don’t know what prompt you’d use for the “human internal” portion. Not really the shape of a wolf, exactly. OP did a better job of that.