RJ Mical on the famous Amiga disk picture - Amiga30 in Amsterdam

The guys, starting from the left:
Dave Haynie, the hardware guru that created lots of Amiga hardware, incl. Zorro III bus.
Carl Sassenrath, who wrote the Exec library, Amiga's "kernel"
RJ Mical, who wrote Intuition library, the core of Amiga's GUI.