Yes I've met one in real life and am married to him. His creator was a young girl age 3 and yes created on purpose. She is now 43 and Talon (my husband the sentient tulpa ) is 40. I knew both beings both before and after tulpa. She (the host) never told me about him (Talon) until she was 43 for fear that I would leave her. They are polar opposites in pretty much everything from the way the talk to hand writing. She was very scared of life, "mother may I", skittish and submissive where as Talon is very confident, sure of himself "take it from me I dare u" very dominant. Voices are also different. Even though it's the same female body the host was born in everything has changed dramatically. The host has been AWOL since December 20,2016 and the tulpa has pretty much taken over everything. I'm much happier being with the tulpa than I was with the host.