He's also in Azzarello and Chaing's Doctor 13 Miniseries... as one of the Architects... He's the one wearing the Batman mask.
Rich did mention that, but a piccie is much appreciated:
And then there were the Architects of the DC Universe. who appeared in the Doctor Thirteen story in Tales Of The Unexpected, with Grant Morrison presumed behind the Batman mask.
So it's not the old Alfred Outsider. This is a brand new original idea. Johns said so, and he created the S!H!A!Z!A!M! kids.Quoting Geoff Johns "I really like The Outsider as a brand new character... That's what's fun in this. It's not what you expect. It's not the same old, same old. That was very important to us doing the story. And it also makes this much more accessible, because you're meeting these guys for the first time, just like the Flash is. There are no other comics with The Outsider or Element Woman or Blackout or the S!H!A!Z!A!M! kids. These are all brand-new concepts that are there for the first time."