Orignally started in England as a family of Irish named the "Hoolihans" caused trouble in a particular area of England, as the Hoolihans spread in notoreity of bein aggressive, violent and dangerous they were mentioned in a newspaper that wrongly spelt their name as "Hooligan" since then Hooligan has been a reference to aggressive, dangerous, violent, abusive, loutish and other behaviours

I couldn’t care less (but one must keep up appearances, right?)

a thug who reguarly goes to football matches and starts fights with opposing supporters and is symbolised usually by: Burberry Hat, Stone Island Jacket,Lacoste Trainers,Tight Fitted Adidas/Nike Trousers And Usually Has a can of Stella or brick in hand.Also, They reguarly make up abusive chants on the terraces to threaten and strike fear into the other team and their travveling supporters.

a rowdy and typically young brawler vandal or trouble maker; a punk

one who engages in innappropriate actions, which can be violent, shenanaganical, illegal, harmful, harmeless, annoying, cheeky and fun, dangerous, or/ and evil

young foolish person who gallavants and roams the streets causing trouble.
See punk or hoodlum.

a thug, a ruffaian, a hoodlum