First custom entity

Do not confuse with a Smiler

Or a rattler

Definitely not a Frowner

How dangerous would my bacteria be

Well before, it was probably like Class 4, but now it's about Class 1

Yeah, it isn’t necessarily friendly, just territorial
It is blind and herbivorous, eating wall moss and making stashes
It secretes enzymes on moss that makes it grow

I looked at the definition, definately class 2 pre rattler
It is more territorial than aggresive