Clown character in action series?

Recently I watched the action series called Strike Back. It's about SAS actions around the globe, with no jokes or such. Everything is about guns and actions and killing people.
Though, it has a character who looks like a clown. He's got flappy ears and round nose :D How so? Every character is supposed to emphasize the "we've got balls" attitude and then there is such a comic character. And he plays a frequent role. Whose idea was this? Such a blow. Look at this picture. Two manly men, looking serious...and there is a clown on the left who makes me laugh :) Too bad. He definietly was the English casting director's friend...