Who said JYP was the only entertainment with successfully debuted trainees. Of course SM is a big part of the entertainment world, and KPOP industry since they have great big name artists under their belt for example like SNSD and Super Junior, just to name a few artists. But there some trainees who made to train under SM, but didn't debut under there. Here I have 10 artists who trained under SM before making their debut in a different company, in no particular order.
Big Bang GD
Special Honorable Mentions: SS501 Youngsaeng, SS501 Jungmin, 5Dolls Chanmi
There you have it, the list of former SM trainees who successfully debuted not under SM. Comment down below. Thanks:)