I read a really cool multiclass on Reddit, the Bardbarian, and I'm going to create one.
But it described a combination of Grapple and Shove to knock an enemy prone and not allow him to get up, since the grapple make his movements down to 0.
But how do I grapple a prone enemy?
Also, while grappling someone, do I take attacks from others with disadvantage?
Best Answer
You can, being knocked prone doesn't stop you from being grappled
First of all, welcome to Stack Exchange!
As per grapple rules, emphasis mine:
No limitation on character state stated. To grapple a prone opponent, simply declare your grapple and roll the appropriate check.
However, the grapple's target isn't under any additional penalties to escape your grapple, as escaping a grapple doesn't require a movement action. Again, as per rules:
As for your second question, which could possibly be its own question entirely:
Grappling does not apply any negative effects on the grappling character
There's no rules stating otherwise that I can find.
Extra: A prone and grappled creature retains the following effect from Prone: