I don't know if it's been discussed on these pages yet, but I wonder if Wells is Professor Zoom, aka, The Reverse Flash. There was a bit of Zoom making the Flash into the hero so he could inspire him, etc. A dash of the predestination paradox.
Which is already here in the show. Wells knows Barry will become the Flash, and, in fact, is the one responsible for it.
I think he's Professor Zoom. Though, a part of me wonders, would they really reveal one of the cast members to be the Big Bad? Maybe. Obviously, it's happened in other shows. Could be fun.
(Of course, there was also Zoom, a modern day version who was stuck in a wheel chair.)