D&D 5E Monsters
Monsters, Demons, Dragons and other beings
Silver Dragon Wyrmling
Medium dragon, lawful good
Skeleton
Medium undead, lawful evil
Solar
Large celestial, lawful good
Spectator
Medium aberration, lawful neutral
Specter
Medium undead, chaotic evil
Spider
Tiny beast, unaligned
Spirit Naga
Large monstrosity, chaotic evil
Sprite
Tiny fey, neutral good
Steam Mephit
Small elemental, neutral evil
Stirge
Tiny beast, unaligned
Stone Giant
Huge giant, neutral
Stone Golem
Large construct, unaligned
Storm Giant
Huge giant, chaotic good
Succubus/Incubus
Medium fiend, neutral evil
Swarm of Bats
Medium beast, unaligned
Swarm of Insects
Medium beast, unaligned
Swarm of Poisonous Snakes
Medium beast, unaligned
Swarm of Quippers
Medium beast, unaligned
Swarm of Rats
Medium beast, unaligned