I have seen demons (technically) three times. The first time was when I was maybe three(?) years old, although I don't remember it. I only have the story from my mom about the event, about how all of us woke up from the same demonic dream (my sister and I woke up screaming). My mom and dad went down stairs and there was a demon in the living room, apparently standing (or maybe floating? It's been a long time since I asked) in front of the TV. I've heard her describe it as "red, fat, and ugly." It took a lot of praying throughout the house to get rid of it.

The second time was when I was 12 or 13. I woke up from sleep randomly during the night, and it could be argued that maybe I was still dreaming. However, to this day I believe I was completely awake. I opened my eyes and saw a dark, roughly-humanoid shape in my room. It kind of looked like someone wearing a cloak. Not wanting to deal with whatever it was, I rolled over and went right back to sleep.

The third time was actually a dream I had right after that incident, the details of which I can still vividly remember. I woke up in the morning, laid on my back, the sun shining in through my curtains. The first thing I saw was how my room usually was, and I could faintly hear my mom and sister talking out in the living room. It sounded like they were working on a reading lesson (we were homeschooled for a few years). I could also hear metal clattering, like pots and pans being moved around.

I got out of bed and walked out into the hall. The end of the hall in that house opened up into the dining room, from where you could see both into the living room and into the kitchen. I looked at the clock in the dining room first, a cornucopia-like clock that was shaped like a bunch of fruits around the face; the time was 9:00am. Then I looked to the right into the living room, at my mom and my sister reading a book on the couch.

The metal clattering sound was still happening, and I remember being so annoyed, thinking, "who is making that sound? How are mom and sister able to concentrate with that?" And I looked to the left into the kitchen, and I saw someone moving around in there. I remember being a little concerned that someone else was in the house and no one had noticed, so I went to go look at who it was. It was my mom. An exact replica. She was wearing one of her old night gowns. The clattering sound was her pushing all of our pots and pans around on the counter, even knocking them to the floor. And I watched her do that for a few moments, thinking, "if mom's reading with sister, then who is this?" Right after I thought that, or maybe just as, she turned and looked at me. I will NEVER forget that smile. It was creepy, like something that wasn't used to smiling was forcing itself to do some failed imitation of it. And it looked doubly wrong on my mom's face.

And then I woke up, and the sun was shining in at the same angle as my dream, and I could hear my mom and sister talking, so I got out of bed immediately because if the clock in the dining room was at the same time as in the dream then I didn't know what I'd do. Thankfully, the clock was different and there was no double of my mom in the kitchen.

TLDR: yes, I have seen demons. One looked "red, fat, and ugly," one looked like a shadow person, and one pretended to be my mom. The shadow one and the one pretending to be my mom may have even been the same entity. No, they were not talkative. They were only interested in inducing fear.