Mysterious dark beings that are seen resulting from sleep deprivation, hallucinogens (mainly deliriants) or potent stimulant use (such as meth), mental illness, or even possibly an actually real paranormal phenomenon.
I couldn't go to sleep, because the shadowpeople appeared in my bedroom, and they were scaring me.
Somebody who was a wimp growing up, and decided to dedicate every second of every minute of every day to being a sho nuff bully, the kind of person who outbullies anybody. Dangerous not because of where they come from or their ideas, but because they would do anything to keep the world from knowing what they're made of.
Don't underestimate the poodle girl, she was a wimp growing up, but there's not much she won't do to hide it from people now. She doesn't want to be associated with the poodle people anymore.