Hull sign three players in a day
Hungary's Halmosi hit eight goals for Plymouth last season
Hull have completed the signings of Peter Halmosi, George Boateng and Tony Warner ahead the club's debut season in the Premier League.
Hungary winger Halmosi, 28, joins for what is believed to be a club record fee of £2m from Plymouth Argyle.
Midfielder Boateng, 32, capped four times by the Netherlands, arrives from Middlesbrough for around £1m.
Warner, 34, the Trinidad and Tobago international goalkeeper, was released by Fulham at the end of May.
Halmosi has signed on a four-year deal, while Boateng and Warner both have two-year contracts.
Their arrival at the KC Stadium follows those of Craig Fagan, Geovanni and Bernard Mendy as manager Phil Brown strengthens his squad for what promises to be a tough campaign.
Hull are also currently running the rule over South African international midfielder Delron Buckley.
Currently on trial at Hull from Borussia Dortmund, he has impressed assistant boss Brian Horton, scoring in Tuesday's 4-0 friendly win at Winterton Rangers.
Horton told BBC Radio Humberside: " It's hard to find left-footers, he's sharp, he's bright, he scored a goal (against Winterton) and he's done well in training.
"The manager (Phil Brown) is going to speak to his agent and his club and we'll see how far we can go down the line."
