Could it beeee?

He uses somekoind of advanced and hilarious technology

I like him the most of the main guys, because he is loopy but genuine.
The others have moments where they appear dishonest, but David goes all the way, to the point of delusions (or.. genius).

His eyes open wide whenever he gets into it, his head shakes as if he cant believe what hes hearing out of his own mouth, his cheeks blush as if he is slightly embarrassed about his theories (probably because he gets laughed at a lot normally), but also from childlike excitement.

Id like to bounce ideas around with him sometime, bouncing ideas around like ancient alien spaceballs

I skip reading the bottom line, because it is usually some lame signature.

He is an alien