Cammy Devlin. A player players hate playing against. A player team-mates love playing alongside.
Just ask Jamie McCart.
The Heart of Midlothian centre-back admitted he didn't like playing against the Australian, but now he is one of his favourite team-mates.
McCart was discussing what both Devlin and Lawrence Shankland are like as colleagues, having come up against both during his time with Inverness CT and St Johnstone.
Both, of course, are going to be out for between six and eight weeks.
"I’ve played against Shankland since under-16s — he’s scored plenty against me," he noted.
"With Cammy, everyone says the same thing when you sign here. I didn’t like playing against him, and it turns out he’s one of the best team-mates you could have.
"Both are huge characters and instrumental in the dressing room. Despite the bad news they’ve had, they’re still positive and upbeat, which is massive for us.
"A huge part of our success this season has been the dressing room. There’s real positivity and strong characters. Fans might not see that side, but as players and staff, we know how important they are."
So, what is it about playing against Devlin that rubs opponents up the wrong way?
"Cammy would admit it himself — he’s nippy and chirpy on the pitch. But that intensity and aggression is what makes him so good.
"Once you know him, you realise it all comes from a good place. When you’re playing against him, though, you don’t see it that way.
"It’s not really slagging — just things he does. He’s been known to pat boys on the head. He’s funny."
On their injuries, McCart makes a strong point: to win the league, you have to rise to those challenges and setbacks throughout the season.
"It's extremely difficult," ge said. "These things happen in football, but losing two key players in the space of a week is always disappointing. That said, it’s an opportunity for others to step up. That’s why you have a big squad at a club like Hearts — to deal with situations like this.
"They’re big players, but when you look across our team there are quality players all over the pitch, including some who haven’t been playing as much. It’s an opportunity for them.
"You’ve got to embrace it. One of the reasons you sign for Hearts is because of the pressure. If you’re successful here, it’s a brilliant achievement. There’s also a chance to prove people wrong. Outsiders will say this will derail us, but we’ve got an opportunity to show otherwise.
"Any Celtic or Rangers side that’s won the league has dealt with injuries. You’ve just got to take on that challenge and show you can cope. It’s about players stepping up."
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Having featured in the last three fixtures, including two starts, McCart is one short of his 300th game in professional football, if you count four appearances in the Challenge Cup for what was essentially Celtic's B side in 2016 and 2017.
The 28-year-old has returned to the team after having to be patient, while the message from Derek McInnes has been consistent.
"The standards the manager sets are really high, and there’s a hunger from players who maybe didn’t get opportunities earlier in the season. When the team is winning, it’s hard to change things, which is understandable. But if you put the work in, you want that chance when it comes," he said.
"Anytime I get to play, I want to show I should be starting. I try to do that every day in training and take my chances when they come."
On McInnes, he added: "He’s very good at that. He’s an experienced manager, and with this squad there are a lot of players who feel they could be playing.
"When the team’s winning, you’ve got to be mature and understanding. You support your team-mates and be a good team-mate — that’s the most important thing."