MATTHEW Morgan may have just three caps to his name but few divide opinion like the Wales livewire – and he has pledged not to change for anyone.

The 23-year-old will head to the World Cup primarily as an option at full-back but also as back-up to Dan Biggar and Rhys Priestland in his preferred position of fly-half.

It was the season before the 2011 tournament in New Zealand that the diminutive Morgan was creating a buzz in the Principality Premiership with Swansea.

He was a free-running fly-half in a lightning fast set of three-quarters that also included now established regional players Eli Walker, Tom Prydie and Hanno Dirksen.

However, he never made the big breakthrough at the Ospreys; there was no doubting his ability in broken play but there were huge question marks over his ability to run the game, unlike his rivals Biggar and Sam Davies.

Those doubts remain despite a fine first season with Bristol in the Championship – after a shaky semi-final the west country side left him on the bench for both play-off final legs against Worcester, preferring former Wales fly-half Nicky Robinson.

It is telling that Warren Gatland sees him as a back three impact player but Morgan says he will just keep doing what has earned him the nod for the 31-strong World Cup squad.

"They've backed me to play my natural game, which is good," he said. "They've got faith in me so I've just got to go out an express myself."

At 5ft 8ins and 11st 6lbs, Morgan cuts a different figure to Jamie Roberts, George North, Alex Cuthbert and even fellow hot prospect Hallam Amos.

When he was with Swansea he once came up against a Cross Keys side who enjoyed great success from targeting the 10 channel with Lloyd Burns but he doesn't pay attention to his defensive doubters.

"I've had that most of my life. I have just had to get on with it. There's nothing I can do other than crack on," he said.

"I work in the gym and on my tackle technique but I've never been bothered by having to put in tackles.

"It doesn't faze me – you can't go into game not backing yourself. They said that about Shane Williams and he became the best player in the world.

"I have had the odd coach has saying: 'You're not big enough'. I went to UWIC (now Cardiff Met) for a trial and the coach Chris Davey said: 'You won't get into my team, you're too small'.

"You have just got to go low and back your technique all the way. I'm more than happy with my tackling and don't mind getting stuck in."

And Morgan would love that to be against Uruguayan, English, Fijian and Australian attackers.

"I would love to get on the field and play at the World Cup," he said. "We have got a tough group and it would be good to get out of it."