Homebrew race, modified from Vampire Spawn monster in Monster Manual
+1 Str, +1 Dex, +1 Con
Alignment: tends toward Neutral or Lawful Evil
Resistance to necrotic damage
Vulnerable to radiant damage
Advantage on Athletics checks to climb
proficiency in Stealth
Sunlight Sensitivity: While you or your target is in sunlight, the vampire spawn has Disadvantage on attack rolls, ad well as Perception checks that rely on sight.
Bite: Str-based melee attack; one willing living creature, or a living creature grappled by the vampire, incapacitated, or restrained. Hit: 1d6+Str piercing damage plus 2d6 necrotic damage. The target's hit point maximum is reduced by an amount equal to the necrotic damage taken, and the vampire regains hit points equal to that amount. The reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.
Languages: Common and one other
Preferred classes: Fighter, Wizard
Common backgrounds: criminal, hermit, noble, soldier, urchin