User blog comment:Aleksandr the Great/Prothean Squadmate is Officially DLC/@comment-4585502-20120223141611

Agreed. We can't know for sure just how integral he is to the plot, but taking into the factor that he's Prothean, he still has got to be valuable. So yeah, totally a lame move. Then again, they already did it to us with Dragon Age 2: Sebastian was made DLC even though his part in the final conflict clearly makes him one of the key characters.