Board Thread:General Discussion/@comment-1255618-20131207105231/@comment-24204226-20140126043325

I don't think it is so much that each mutagen is different per say, but as the Kraang said it is unpredictable. However, it is unpredictable because it is unstable hence the story arc of snatching scientists from all over the city in an attempt to modify it so it would work the way the Kraang had intended.