What's the German for "Delusional fantasist"?

Apparently it's "delusional fantasist" according to Google Translate but I suspect that's not right... so I'll go for "Stierscheissemeister" (bullshitter) because that's within my virtually non-existent linguistic abilities... But it's probably wrong...

Anyway... "Why do you ask?" I hear you cry...

Glad you asked...

The reason I ask is this...

Lunches that cost thousands of Euros?..

A private jet?..

A butler bringing him breakfast in bed?..

All this ridiculous crap to try and sell his ludicrous IBMS scam to kredulous krauts...

He's as bad a liar in German as he is in English...