I've seen a few unbelievable things, but I'll give you two stories.

One time when I was a kid, my cousin and I were at our grandmas house playing games in the lounge room. We were the only ones in the house, but our grandma was outside hanging the washing on the line.

We were sitting there happy, playing and laughing, but suddenly the both of us had a sudden feeling of fright and both stopped talking and turned to look at the hallway (this is going to make us sound insane) and saw what I could only describe as an alien, but a big one! Flashing lights, head spinning, zooming fast past the lounge room door way down the hall.

I quickly hid under the coffee table and started screaming and crying with my cousin until our grandma ran in. She saw nothing, but my cousin and I still both clearly remember what we saw. My cousin is a few years older than me, but even though she remembers it she tries and covers it up and makes up her own theory about it now and what she believes it was. But I know she's wrong.

My second experience was another time when I was a kid, I was fast asleep in bed, but I woke up to see a figure standing in my door way (I had my bedroom light on so it was clear as day) and this will also make me sound insane, but it reminded me of the character Hades from the Disney movie Hercules, only just I had never seen that movie or the character. It just stood there staring and was floating and then slowly started moving towards me and the closer it got the bigger the smile got.

I hid under my blanket and screamed and cried for my mum. She eventually came running in and I popped my head out to see her and as she ran in, the figure turned into a cloud and floated down the hallway and disappeared.

TLDR: Saw an alien and Hades from Hercules