Whether it is the big saves or the terrifying tirades he launches at defenders, he has been a highly conspicuous addition to the squad.
The goalkeeper believes that his position attracts eccentrics and cites as an influence Artur Boruc, the colourful former Celtic No.1 and fellow Pole.
He said: "Maybe my team-mates have been shocked by how much I shout, but the team know me by now and know that I am a little crazy on the pitch. I hope it is a nice crazy and that it is good for the team.
"Goalkeepers need to be a bit crazy and I prefer to be like this. I am more concentrated that way. I try to shout and maybe somebody listens, I don't know. But I am trying to help and will always be like that. I like Iker Casillas and Artur Boruc because they are strong characters. I know Artur from Poland and he was someone who shouted. But I am Rado first and foremost, not anyone else."
Cierzniak's rage seems to stem from a hatred of losing and United's defeat against Kilmarnock last weekend clearly hurt him. "I'm not happy when my team loses," he added. "The next day after the Killie game was very miserable. I hate life when it's like this. I hate when the other team scores. I think for me and for the team that was a very big defeat. I have been trying to forget about it because we have a new game and we have to be concentrating on only that."
Cierzniak believes that his communication on the pitch is better than off it, even if, or perhaps because, it is that much more direct. "On the pitch language is very simple," he said. "You only need a few words. Sometimes I don't remember words but out there it is easier to talk, so I'm settling in no problem."
Facing Cierzniak in the opposite goal today will be St Johnstone's Allan Mannus, who has had to deal with defeat more regularly so far this season. The Northern Ireland squad member believes that the 2-1 loss to Aberdeen two weeks ago was the low point of a bad month for Steve Lomas' side, and one that has yielded just one point in four games at the beginning of the campaign.
"Aberdeen at home was the worst display and result of the season, so there are even more reasons for wanting to turn things around against United," Mannus said. "As a goalie, you are never going to go through a season without conceding but you try to keep as many clean sheets as you can. We haven't done that so far this season and we have to get back to that."
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