The epic ability called Vampire (Dio Brando) has received a rework in A Universal Time 4.4 update. It now has a fresh design and new move concepts. Players can use corpses to summon the undead to attack the enemies, while "overwhelming foes with superhuman feats."
A Universal Time Vampire Ability (Dio Brando) Obtainment Method
In order to get Vampire ability, the first step is to obtain a total of six Dio's Charm by opening Chests. You will then need to use them to craft Dio's Remains by talking to Crafting NPC in the park.
Next go to a boss alter and use Dio's Remains there to spawn Dio Brando boss. Next, defeat the boss to get Vampirism Mastery and there's a 20% chance of obtaining it.
Once you have the item, you need to simply use the item to get Vampire ability or Dio Brando.