Definitions for wreaker
Random House Webster's College Dictionary
to inflict or execute (punishment, vengeance, etc.):
to wreak havoc on the enemy.
to carry out the promptings of (one's rage, ill humor, etc.), as on a victim or object:
to wreak one's anger on subordinates.
Origin of wreak:
bef. 900; ME wreken, OE wrecan to avenge, c. OS wrekan, OHG rehhan, ON reka to drive, avenge, Go wrikan to persecute