The Fakku community tends to think the majority of works with the "random" tag were made when the creators were high. Thus, "I want what you're on."
Alcohol and drugs are actually really good for coming up with ideas... x.x
The first character I ever imagined was called Lyfin. He was a citizen of Atlantis (the supercontinent not the planet), was involved with its destruction, was reborn when his universe broke from its multiverse and formed its own multiverse, became a god of that new multiverse, and eventually met my second character, Rou...who was one of many heroes in about twenty or so SciFantasy stories across an entire universe. The two ended up teaming up to fight Nonexistence itself - y'know, Primordial Chaos...
Because Mary Sues are awesome.
I never once proclaimed that I was them, though - interesting, right?
Now I have a third character, but... She's not fully developed yet
So I'm not going to mention her xD Especially, since she's also my online identity 0.0 My main one, not this one...
Whenever I need to imagine, I just imagine an invisible sword, turn on some music, and start fighting thin air...until I make enemies, until I become another person, until the entire world reforms and a story is made... That's how I do.