Curate, connect, and discover
Love the fact the anime made the three AFO users share the same (or almost the same) shield quirk:
Nine.
Shigaraki.
All For One.
Which is funny and notice I said the anime, because in the manga neither Shigaraki or All For One are using (or have) shield quirks.
They likely use air cannon or some blast quirk in those scenes ->
But Bones specifically changed that into quirks that resemble Nine's Air Wall quirk.
I like to think it's a tribute to my king 🤍
However the shield quirks of the other two seem to be much weaker that Air Wall.
AFO shield quirk in particular is probably the worst, as it only covers a very small radious and it was destroyed by one Jet Burn from Endeavor.
Meanwhile Nine's version of the quirk can cover a gigantic radious if he user wants:
Also Air Wall can stack multiple shields into one and it was powerful enough to stop a charge from Deku going full 100%
All this makes me think Air Wall is such a boosted quirk in general.
No wonder why Nine stole that one. Smart boy.