'Genuine hatred': Paul Gallen's spiteful Barry Hall spray

Barry Hall and Paul Gallen won't be sharing any post-fight beers with Hall describing the former league star as arrogant and a poor representative of the NRL at the "Code War" weigh-in in Melbourne.

The pair squared off after AFL legend Hall weighed in at 102kg - only 0.4kg heavier than Gallen - but with a glaring 14cm height disparity.

It wasn't just height where the pair didn't see eye to eye ahead of Friday night's fight at Margaret Court Arena, with Hall saying his hatred for Gallen was "real".

'YOU’VE DONE NOTHING': Paul Gallen 'bulls***' makes Barry Hall snap

"I'm very much one for being humble and respectful and I'm representing the AFL code and I don't think he realises that he's doing that for NRL," Hall said.

Things got heated between Paul Gallen and Barry Hall at their weigh-in. Pic: Getty

"The way he's been conducting himself is slightly arrogant and I don't know if the NRL community would be happy with that.

"Not having a beer with him wouldn't keep me up at night."

Gallen, who is undefeated in nine fights (5KOs) while Hall is on debut, said the barbs started out as pre-fight banter but had turned personal and he would take pleasure in getting the best of his opponent in the ring.

He said he had the support of the NRL community, with Canberra coach Ricky Stuart one to tell him: "Don't stuff it up as you've got the NRL on your shoulders".

"It started out that we had an enormous amount of respect for each other and over the past month it's turned into genuine hatred," Gallen said.

‘There to hurt him’

"We genuinely don't like each other and to be honest I can't see us having a beer as it's gone past the point of us having any kind of friendship after it.

"I'm in there to hurt him and he's there to hurt me."

The burly Gallen says his experience in the ring will give him an edge over Hall, who was a top junior boxer but hasn't fought in more than 25 years.

Barry Hall and Paul Gallen exchanged barbs during their Wednesday press conference. Pic: AAP

Gallen said while Hall had a reach advantage, he wasn't bothered as everyone he had fought had been taller, and plans to "go forward" on Hall to wear him out.

Hall said he was ready for such tactics and would handle Gallen by using his jab to keep him at bay until a shot opened up.

"We've got some traps to set and the good thing is he will come forward and allow us to do those things," Hall said.

"The trap doesn't have to be too good, he's going to be right in front of me."

BARRY HALL AND PAUL GALLEN TALE OF THE TAPE

AGE: Hall 42, Gallen 38

HEIGHT: Hall 194cm, Gallen 180cm

WEIGHT: Hall 102kg, Gallen 101.6kg

FIGHT RECORD: Hall (0), Gallen 9-0 (5KOs)

ODDS: Hall $2.14, Gallen $1.65, Draw $15.00