Hirelings are available at the Adventurer's Inn. The two here are available right at the beginning of the game.  Later others may be for hire if you refuse their first offer to join.
 

Devlin Arcanus Necromancer	Elsbeth Lamentia Vampire
Might 9 Hit Pts 28 Intellect 20 Spell Pts 52 Personality 11 Fire 0 Endurance 11 Air 0 Accuracy 15 Water 0 Speed 16 Earth 0 Luck 15 Mind 0 Level 5 Body 0 Skills: Dagger, Staff, Fire, Air, Water, Earth, Dark, Leather, ID Item, ID Monster, Learning, Meditation, Merchant	Might 20 Hit Pts 51 Intellect 7 Spell Pts 24 Personality 17 Fire 0 Endurance 17 Air 5 Accuracy 16 Water 0 Speed 19 Earth 5 Luck 7 Mind Immune Level 5 Body 10 Skills: Dagger, Spirit, Mind, Vampire, Leather, Shield, Alchemy, ID Monster, Learning, Regeneration