Obligatory Planescape Post. This is Ylem, from Uncaged. Ylem is a rogue modron that is somehow part Slaad, and conducts magical experiments.
Honorable mention: the Time of the Twins cover art
View attachment 259061
Artist: Clyde Caldwell
Source: Knight of the Black Rose
Subject: Lord Soth
Doomed Lord Soth has always held a special place in my heart and this novel was the first D&D novel I read that was only Dragonlance adjacent.
I'd say that sculpts are absolutely art and the action figure inspired a lot of young D&D players.