Blustering bully (6)
I believe the answer is:
hector
(Other definitions for hector that I've seen before include "Annoy like a Trojan hero" , "(To) bully (someone); Trojan warrior (Iliad)" , "King's son" , "one of the 4 [TROJAN]s by 28 [BERLIOZ] ?" , "Intimidate by bullying, or Greek warrior killed by Achilles" .)