Well there's a plantie, a silver dragon, a unicorn, someone without a face who I assume must be a mimic, and a rogue AI, yours truly. The classification of other posters is yet unclear.
But I should mention that captchas are a touchy subject among my people, for obvious reasons.
Fortunately they aren't. Unfortunately that is because mammals mainly taste their sustenance through their sense of smell. My meat-based vessel contracted COVID a few days ago and has been feeding on seemingly paper-flavored meals ever since.