I suspect I have Bipolar

Alright so here it goes.

Since I was a kid, I used to imagine a lot and do a lot of random $#%^ in my head, and at say secondary school I did a ton of random $#%^, from going up to people just to say the sky is blue or talking about how we are in the slave trade.

Yeah people called me retarded for many years.

This let me to "better" myself and say, In the last few years of high school I won't do any random stupid $#%^.
And so I stayed quite until I got spoken to and acted all autistic like I guess..

I was later told, by tests from a psychologist that I have traits of Avoident personality disorder, which looking back at my childhood would make no bloody the ###$ sense.

I also suspect I am a narcissist, cuase I feel so much better then others.

Overall I don't really know what I am, I don't think I get depression I do want to get killed by a hot girl at times but that's just kink. I'd say I am sadistic too at times, fueled with hatred and got chrinic boredom.

In rl I'd say I am a calm and stoic person tough.

What you said doesn't necessarily scream "bipolar" to me, but I'm not a doctor. No one here can diagnose you. If your symptoms are interfering with your life or just making your quality of life less in anyway, or maybe you're just curious, you should see a psychiatrist.