Sinister's not a guy who's actually "done it all" in regards to biological tinkering. One memorable goof Sinister made was... in a Sabretooth comic? Yeah Sinister cooked up a brand of super-mutant clone he made multiples of... who were all mind-linked... as a feature. the idea is to have an army with perfect coordination.... Well.. Sabretooth figured out this also meant that if you distract ONE of them... they all get distracted.