Worstgen
Jailer
Momonga, Dalmatian come to mind when they tagged him, not sure who else.
Usopp Haoshoku Haki
I remember some really big guys.What chapter are you talking about?
Tyki_Mikk
The big guy wasn´t a vice admiral, at least that was never state that the one who defeat Luffy was a viceadmiral.
Luffy is the mc
They fucked him up when he was using his base form, if he used G2 he would have been close to the most powerful ones, they're nothing special
Shiroyru
That giant he one shot was in the Giant Squad , who contain VAs Ronse and Lacroix. Maybe all of them are VAs.