1) Biblical aggressor 2) Biblical hit man 3) David, to Goliath 4) Hard hitter, biblically 5) Heavy hitter 6) One inflicting heavy blows 7) One landing a blow 8) One who strikes 9) Slayer of old 10) Sword swinger 
• (n.) One who smites.
Smit'er (smīt'ẽr) noun One who smites. « I give my back to the smiters .» Isa. l. 6.