When I was about 7, I had an imaginary friend: A red lizard demon named Alex. She carried a baseball bat with her everywhere and could hack computers. I stuck with this one for about five years.
Then I went through a phase where I tried to convince everyone that I could see dead people. I had three "ghost friends"... Conrad, Sophie and Jason (the last of whom was Jason Todd from Batman). Conrad was a showoff and always wore a top hat, Sophie was a hotheaded tomboy and Jason was timid and had a crush on me. I abandoned them after a real friend of mine died. I don't remember why.
Now I have an imaginary twin brother named Blake. I pretty much designed him as the male version of me. We don't talk in public or anything, he's just an internet thing. Sometimes I have him questioning my sanity...
A childhood belief about imaginary friends

others believed things like this
- I used to have an imaginary friend named Mr. Nobody. He would protect me from my imaginary enemy, Bad Elmer.— Kdees
- when i was growing up i had two imaginary friends. One was named Jennifer, the other was named Onion.— Tessica
- When I was six I had an imaginary friend named Binky. When I was seven my dad ran over Binky with the car.— Shadia Granger-Malfoy
- I thought my imaginary friend was real and he imagined me
I hope he still believes I existAnon - When I was little, my dad had a friend named Scott. I thought my dad's friend was the king of Scotland— Uhhh....
- sophie b. hawkins. Damn I wish I was your lover. I heard Damn I wish I was your motherAnon