| Name | Level | Attributes | Sources | |
|---|---|---|---|---|
| Shortstack Highwaymen | 12 | |||
| Shrill-Master Gallea | 30 | |||
| Sickly Digger | 2 | |||
| Sickly Goblin | 1 - 20 | |||
| Siege Master Resh | 5 - 6 | |||
| Siege Vendor | 1 | |||
| Siegemaster Alexander PTR Vendor | 1 | |||
| Sighted Advisor | 7 | |||
| Sighted Arcanist | 6 - 8 | |||
| Sighted Bloodblade | 15 - 24 | |||
| Sighted Devotee | 25 | |||
| Sighted Fanatic | 10 - 28 | |||
| Sighted Ritualist | 11 - 19 | |||
| Sighted Scavenger | 15 | |||
| Sighted Seeker | 5 - 24 | |||
| Sighted Spelldealer | 19 | |||
| Sighted Spelltutor | 19 | |||
| Sighted Voidspeaker | 28 | |||
| Silenced Shelver | 22 | |||
| Silverback Gorilla | 30 | |||
| Singed Stomper | 28 | |||
| Sir Eldenvale | 20 | |||
| Sir Jenry The Strong | 23 | |||
| Sir Krupp the Betrayer | 18 | |||
| Sir Morrow The Valorous | 13 | |||
| Sir Romulus, The Protector | 12 - 13 | |||
| Sirensong Box | 16 | |||
| Skeletal Farmhand | 9 - 12 | |||
| Skeletal Reaper | 7 - 29 | |||
| Skeleton | 1 - 30 |