Clearly Harrison Wells is much more than he says he is. What is his obsession with keeping Barry safe ? who is he really ? What do you folks think ? My theory, he's really Eobard Thawne, the Reverse-Flash. (or maybe Abra Kadabra). He's travelled back in time to make sure that he exists in the future (which sounds crazy, but then Reverse Flash is a complete nutcase). Which would explain him building the particle acceleration and causing Barry's accident. The fact that he's willing to murder to protect Barry strongly suggests that he has something personal to lose, if something happens to Barry.