There seems to be a pervasive meme on Pixiv for rendering Mutsu from Kantai Collection as a slug or snail. The Pixiv tag for it is り陸奥たか or "rimutsutaka", which is "katatsumuri" (snail) written backward.
I think the concept makes a good tag - what I'm not sure about is the tag name we should use. "Rimutsutaka" is a possibility, but it's not obvious to English speakers what it's meant to be (though "gomadoka" seems to have worked out okay). I'm leaning toward mutsu_(snail) or mutsu_(kantai_collection)_(snail), in analogy with some of the other pervasive animalization memes like aki_shizuha_(crab). Thoughts?
Also, should it be a character tag like gomadoka, or a regular tag like aki_shizuha_(crab)?