They've had very different paths to the Coast, one coming from Leeds, the other from Newcastle, but the Titans new recruits in the hooking role believe they can offer a one-two punch for their new club.
Randall has taken the starting jersey since Sam Verrills' injury, while Leeming has quickly made an impact off the bench since making his club debut in round six.
The 27-year-old says despite their different styles, he's enjoyed having the Englishman around the team.
"I've loved having him here," Randall said.
"He's slotted in really well and to have him on the bench and coming on, we've got a good little combo.
"When the game has slowed up a little bit, his strength is running and being an attacking sort of hooker and I think it is working well for us.
"Even off the field, he has gelled really well with the boys and everyone loves him."
The Randall-Leeming combination will be vital this week, as the Titans come up against the in-form Jeremy Marshall-King and his Dolphins.
"He (Marshall-King) has started the season off pretty well and has been having some big games," Randall said.
"It will be good to square up against him.
"I think he is one of the top hookers in the comp at the moment so it is a good challenge for me and I'm looking forward to it."
Randall says he has taken confidence from his own performances in recent weeks and is keen to keep growing his game.
"I thought last week I took a step in the right direction and was running a little bit more and was pretty solid defensively," he said.
"Going into this weekend I hope I can do the same for the team and we can get a win."
