He was one of the faerie creature player characters of player Peter, who reveled in faeries. And in drawing all sorts of things. Instead of doing illustrations he went on to study Art History in Essex (as a Dutchman), which is still a loss to those who love pictures. Maybe he now illustrates books on the side, I don't know. Hey Peter, are you out there somewhere? Lost your address ;-)
Peters characters had one typical weird thing. They always seemed to have to die, or nearly die by fire. The same went for Gwarwain, the little illusionist. I believe he jumped burning off a pirate ship, just fireballed by an enemy. Or something like it.
My home brew system had evolved even further away from Dungeons & Dragons once Gwarwain was made. Wisdom as an ability was ditched at the time. Hit locations were added - about twenty of them, as you may see in the right hand corner of the sheet. 18 was neck, 19 face, 20 head. Each location could have its own armour. Which you could list on the sheet.
And if you could draw, like Pete, you could make your sheet shine with a dressed miniature of your hero. There were a kind of proficiencies, spell points (called "Mana"), and most of the specifics of my system at that time has slipped my mind. Can't be helped.
Anyway, still treasure this one. Another age gone bye.
Images are still copyright Peter van der Meijden, about 1986.
Update: just found him on LinkedIn!