Pardo (`pardo * xsim ; com' as of 1999/03) helped with the design and implementation of MPtrace and the design of Shade, both while at the University of Washington. He was an original Crusoe architect and implmentor.
Pardo is most infamous for his shameless promotion of Run-Time Code Generation (also known as self-modifying code), and he also suffers from interests in compilers, computer architecture, operating systems, performance analysis, and a bunch of other stuff.