He's a unique prospect, in 20 odd years of watching football I've never seen a player who combines his traits.
He's absurdly fast, remember how he tore that Tottenham full back apart in the CL or Walker in the WC
He's completely ambipedal, usually players who're great with either foot play centrally like Cazorla, Diego Forlan or Hernanes, Dembele's ability to do it combined with his pace allows him always to take at least one defender out with his feints, if you don't dive in he goes past you with no chance of you recovering and if you do he fakes the cross or shot.
He has supreme technique, nutmegs for everyone all day
Great shot on him too, usually flair players like him have their balls shrink in front of goal but he has both curl and putting your foot through it in him
Finally he's obviously a street player. Far too many sterile academy little pricks with nice hair in football nowadays, Dembélé is the polar opposite of that. Plays for fun, no golfing after games, he'll go out of his way to humiliate a defender. Looks like a bit of an idiot too, don't think he read many books. Complete package really
That bonus clip makes me laugh literally every time I watch it. The confusion on his face at the end 😆