Crawl, like a caterpillar? That would look funny just as well
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I can imagine how it looks when several of them are attached to a certain victim. Give them some poison as skill on a certain level, that can cause panic when it's attached. The attacked creature then runs around with it's arms flailing above it's head. I can imagine the laugh when you see a kobold or other bulky creature run like hell, screaming with the arms in the air with 5 tentacles on his head. Hilarious!