Here is an illustration by Robin Davies from the Masters of the Universe Ladybird book "Wings of Doom". Gnolls were a race briefly mentioned in the Masters of the Universe Series Bible. When I was a child I remember thinking that the Gnoll's shield was actually a mouth that could eat things, not realizing that it was merely an elaborate design! I love the composition of this piece with the Gnoll approaching He-Man, who is drawing the Sword of Power.
(click on the image to see it at full-size)