Who is the good guy anyway – Theories Contest ?
I think the Oceanic 815 Pilot was killed by Jacob although it was MIB that appeared to have performed the evil deed simply because Jacob didn’t want the candidates to have exit capabilities off the Island once they became captives.
Jacob was also responsible for blowing up the freighter in S4 (I think) and well as killing the Ajira flight pilot in 5 for similar reason. I believe Christian; who appeared to Michael before he died or got blown to pieces to be precise, while on the freightor, was Jacob because we now know the MIB could not “fly” over water. And who else had that supernatural ability to perform as such at that time?
Also I think Jacob and MIB did not kill Frank because he was a candidate. Remember, Frank was originally to be the 815 pilot but was replaced suspiciously beforehand.
My theory folks!