Pilots called the SBD2-C sonofabi*ch 2nd Class
The Helldiver was the SB2C. There was no SBD2, (much less an SBD2-C) though there WAS an SBD-2 (the first naval variant of the Dauntless, the SBD-1 being a land-based aircraft assigned to the Marines). There was also an SB2D, however none were actually built before it was redeveloped into the BTD Destroyer.