Angus McBride (1931-2007) is probably most famous amongst roleplayers for his beautiful covers for many a MERP and Rolemaster supplement.
However that is not his only legacy left behind for gamers. In the mid 70s he started a long association with Osprey Publishing, producing many a colour plate for the Osprey Men At Arms series, therefore becoming one of the most prolific illustrators of historic soldiers and warriors around and influencing many a wargamer and figure collector. British tabletop wargaming and it's cottage industry manufacturers owe him a huge debt of thanks.
Now I didn't know this until I did some Googling for the purposes of this post but McBride was involved in a fairly controversial children's book back in the 1980s. Ladybird, children's book publisher of slim hardbacks on all manner of subjects actually published child versions of Dracula and Frankenstein to some notoriety. As I recall Mary Whitehouse got involved and there was some media debate as to whether horror classics (and a sexualised one at that with Dracula) were suitable subjects for children's literature. Suffice to say my Mother, always keen to up my reading age, ran straight out and brought me a copy as soon as the fuss kicked off.