They don't have solo careers but they have solo videos. You can check Mascara if you have not already. It is their first official comeback. Their next MV after Mascara is Shooting Star. Otherwise, you can start rap,vocal or dance series. Dances are called MOVE like MOVE 1 MOVE 2 ( this one has solo videos for each member so move 2 7 videos in total, all very short ) MOVE 3 MOVE 4 Vocals are VOX 1 VOX 2 VOX 3 etc. goes on. Raps are TAPE 1 TAPE 2 etc. TAPE 3 has 3-A and 3-B, TAPE 4 has 4 solo videos and 1 all 4 of them.