This is a tricky one.
There are some 1/16 scale military figures that can be modified, but they can only really look like working men. Not your usual Riverama pilot.
There are some action figures of about that scale, some of the Doctor Who figures have been used. Some action figures have cotton clothing and can be stripped and re-dressed. And if by scale they are a bit small, paint the hair grey and tell everyone it is Bernie Ecclestone.