Even the 1992 Tokyo Toy Show prototype version of
Phantasy Star IV started with sketches of the characters. This sketch, which was used in finalized form alongside similar sketches of Chaz, Rika, and Wren, shows a very dynamic Rune. I like to imagine that he has just cast a spell or struck a foe with his staff. We also get an interesting peek into the design process from this image. You can clearly see the outline of Rune's upper arm and back under the cape, indicating that his full form was drawn first and the cape was "draped" over him later.
You may view the gallery page for
Prototype: Rune.