MR LAX
What I'm asking you is this, is it not possible that you're making a mistake and that this name Scorpion is in fact his new codename after he decided to work for you and that's the name that van Rooyen would have then used to refer to him as and you in your dealings with him thereafter would have used that name?  Is it not possible that you're mistaken, that this was his "Chimorenga" name that he would have used in the struggle, his nom de guerre, so to speak?