Well FEAR is always a gimmick, thing is Endeavour is always countered by ghosts (it is a Normal attack), and thus Bullet Punch won't act as a back up.
Also, if you're using Bulk-Up, and they hit you with a physical attack--won't it defeat the purpose (of course, at level 1 it will probably be killed by anything)? A STAB attack would always be better (or a way to hit ghosts).
imo, Phanphy is the best FEAR--Ice Shard and immunity to sandstorm.