hector

antagonist, enemy

abuser, baiter, giber (or jiber), harasser, harrier, heckler, mocker, needler, oppressor, persecutor, ridiculer, taunter, tease, teaser, torturer

goon, mug, rough, roughneck, rowdy, ruffian, tough, toughie (also toughy)

bluster

affright, alarm (also alarum), frighten, horrify, scare, shock, spook, startle, terrify

menace, terrorize, threaten

badger, harass, hound

bludgeon, coerce, compel, constrain, dragoon, force, make, oblige, press, pressure, push around

demoralize, psych (out), unman, unnerve

discompose, disconcert, disquiet, distress, disturb, perturb, upset