-Addedhologram dialogues. You can enable this option in each conversation entity. This will display a hologram above the NPC on each conversation dialogue. HolographicDisplays needed:
https://dev.bukkit.org/projects/holographic-displays
Code (Text):
name: '#fffa9c&lHegror'
starts_with:
- NPC with id 0
hologram_dialogues:
enabled: true
offset_y: 2.7