A reluctant dwarf must play a critical role in protecting a special baby from an evil queen.
intellectual or moral dwarf
(figurative) a person who is seriously deficient in a certain quality or ability; often used in the contrast between a "giant" in words and a "dwarf" in actions
midget performer
(archaic) a dwarf performer or court entertainer used for comic relief
short pillar
(archaic) a short pillar or post placed on a beam in traditional architecture