When I rolled up my
chaos renegade warband, I think the unit I was most pleased about was the three ratlings. Not because ratlings are iconic followers of chaos (the reverse is probably true), but because I've always enjoyed modelling and playing with figures of a ratling's stature. I even made a full
ratling Inquisitorial retinue after all!
I already had four or five spare ratlings, so it was a case of selecting three to work out how to chaosify them. To my mind, the key change needed was a head swap. The classic Rogue Trader ratlings have beaming round faces - not the sort of look that a trio of corrupted ratlings would sport. In a case of serendipity, I also happened to have a selection of
Maxmini's Fallen Legionnaire heads (left over from an aborted Blood Bowl hobgoblin project).
I cut off the original heads, replaced them with the nasty chaotic ones, and sculpted new collars: