Jaime Garcia, Aaron Slegers, Tim Melville, Nick Tepesch and Chris Heston.
Without those one-hit wonders (each pitched in a single game), the Twins would not be on the verge of setting a team record for most players used in a single season.

Or without guys -- Felix Jorge (above), Drew Rucinski, Dietrich Enns, Jason Wheeler, Randy Rosario and Glen Perkins – who have taken the mound twice. (Adam Wilk made three appearances, for those of you scoring at home.)
As Phil wrote in his notebook:
John Curtiss will set a couple of Twins records when he throws his first pitch. He's the 12th player to make his major league debut this season, topping the 11 debuts in 1999 that had stood as the franchise record. And he will be the 50th player to appear in a game for the Twins (and the 35th pitcher, already a Twins record), breaking last season's record of 49.
"Given the change in the rules and the disabled list being shortened [to 10 days], everyone knew there was a chance to be a lot of movement," said manager Paul Molitor. "[But] I don't think I would have [expected] 50."
The Twins have used 16 different starting pitchers.
The Texas Rangers used 40 pitchers in 2014, a major league record. They also used a record 64 players that season.