I ran into these for the first time last night. They were moving so slow it triggered my Toneberry "OMG Kill it before it gets close!" response. So I have no idea if they're dangerous or not.

... If this is the result, then that's pretty dangerous.

EDIT: Oh, I got mixed up. I guess these are the ones from Code Avoid. My bad.

Ow now I hate this! They make Bad enemy into the cute one. Great, now if that thing appear again, this image will be fukking haunting me!