Johnson believes the City fans might have a new goalscoring hero on their hands.
"Everyone knows Mario's qualities," Johnson told the Manchester Evening News.
"He has already scored five goals - and that's what he is, a goalscorer. Sometimes you won't see him for five minutes, but then he'll get on the end of a cross, or get a shot off, and it will go in.
"That's something it's good to have in the team, someone who can create something out of nothing."
Balotelli looked less than excited after his goals, something which manager Roberto Mancini explained as being down to the fact that he sees scoring goals as being as natural as breathing.
And his demeanour on the pitch does not suggest he is revelling in his new career at City.
But Johnson says he is a different person away from the spotlight:
"He's a bit of a funny character but the lads think he's great around the dressing room - and he has some good banter!
"He doesn't celebrate his goals, but that's how he is, he just doesn't show too much emotion."