Green’s Dictionary of Slang

hector n.

also bully-hector
[an ironic use of the Trojan hero Hector, son of Priam and Hecuba, husband of Andromache, ‘the prop or stay of Troy’; thus note Shadwell, The Squire of Alsatia (1688): ‘They are all of them as stout as Hector’]

a blustering, swaggering bully, a thug, a bouncer, esp. of a brothel.

[UK]T. Heywood Faire Maid of the West Pt I II i: I could wish that ere I past this field That I could meet some Hector, so your eyes Might witnesse what my selfe have oft repeated, Namely that I am a valiant.
[UK]Mercurius Fumigosus 22 25 Oct.–1 Nov. 187: Of Sodom Ladies and their Trades, / Of their Hectors, and Trappans.
‘P.R.’ Whores Dialogue 5: I can [...] rant it and swear with domineering Hectors.
[UK]Head Nugae Venales 258: I was in Holbourn, where I saw two high hot Huffing Hectors (about three-quarters Drunk).
[UK]Behn Sir Patient Fancy V i: For he’s the leudest Hector in the Town; he has all the Vices of Youth, Whoring, Swearing, Drinking, Damning, Fighting,—and a thousand more, numberless and nameless.
[UK]R. L’Estrange Erasmus Colloquies 139: A Ruffling Hector that lives upon the High way.
[UK]Character of the Beaux 18: Another sort of Beau, is what we generally style a Hector, or Bully-Beau.
[UK]T. Brown Amusements Serious and Comical in Works (1744) III 108: As notable a conqueror, as monsieur Boufflers, or any of the French bullies and hectors.
[UK]N. Ward Compleat and Humorous Account of Remarkable Clubs (1756) 107: To adorn the Hector’s Blockhead, with a lac’d Hat, Beaux like, under his left Arm.
[UK] in D’Urfey Pills to Purge Melancholy II 24: I hate, she cry’d, a Hector, a Drone without a Sting.
[UK]Penkethman’s Jests 24: As you live, indeed, with three or four well-looking Fellows about you, as fine as Hectors.
[UK]C. Johnson Hist. of Highwaymen &c. 192: The former of which Planet is of a thievish, cheating, deceitful Influence; and the other hath Dominion over all Whores, Bawds, and Pimps; and, joyn’d with Mercury, over all Trepanners and Hectors.
[UK]Poor Robin n.p.: What does that thief Mercury do with Venus? Why even the very same that hectors and padders do with ladies of pleasure [N].
[UK]Smollett Peregrine Pickle (1964) 378: He now reigned chief Hector of the place, with unquestioned authority.
[UK]Smollett Humphrey Clinker (1925) I 149: I have seen him as much afraid of that overbearing Hector, as ever schoolboy was of his pedagogue.
[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]B.H. Malkin (trans.) Adventures of Gil Blas (1822) I 190: This address alarmed me [...] for I was no Hector, and the tour of Spain not yet finished.
[US]J.K. Paulding Bucktails (1847) III ii: What sayest thou, my bully Hector?
[UK](con. early 17C) W. Scott Fortunes of Nigel II 147: The Hector who had spoken so warmly and critically in Nigel’s behalf, stood out now chivalrously.
[UK]E.V. Kenealy Goethe: a New Pantomime in Poetical Works 2 (1878) 334: O! thou base and blear-eyed Hangman, / Rakehell, Hector, Squint-eye, Shark.
[UK]Macaulay Hist. of England III Ch. 16 [Internet] To play the Hector at cockpits and hazard tables.
[UK]Sporting Times 22 Nov. 3/2: As for those bold Hectors who ‘talk kicking’ so loud — at a distance [etc].
H. Day Kin o’ Katadan 85: Oh, mother’s full o’ hector ’bout I’m goin’ to be a sport,/ Jest because I’m on the jury and a-goin’ down to court.

In phrases

...as/than Hector [? euph. for SE hell]

(US) used in a variety of phrs., e.g. dead as Hector, mad as Hector, meaner than Hector.

[US]DN III 304: Dead as Hector [...] Entirely dead. Very common.
[US]in DARE II 953: (Qu. GG40, .. Violently angry) Mad as (old) Hector; (Qu. HH22b, . . A very mean person. . ‘He’s meaner than.’) [...] Hector.