The 'Heart Skips a Beat' singer, who will join the boyband on tour from May 29, said that he also wants to buy the group Legion of Doom outfits.
"They had these amazing spiky outfits that could deflect anyone who came near them," he told The Sun.
He added: "I think, as the unofficial bodyguard for the boys, I'll need one.
"I'll get costumes made for the lads, too. But I suspect they want to be touched."
Murs recently said that he hopes to convert One Direction's US fans when he joins them as a support act on tour.
The Xtra Factor co-host will also embark on his second arena tour of the UK in 2013.
Watch the video for Murs's 'Oh My Goodness' below: