My Necro main is in full VoE mode right now, so I'm using Eternal Alchemist as a Male Asura Ritualist, while dressed in the Ritualist outfit.

Before that, I used "Master of the Rifts" since it's apparently the rarest title I have, despite being relatively easy to get (just time consuming).

I use Kingslayer on one of my alts since I enjoyed the challenge of getting it as a glass-cannon DPS without exploiting or cheesing it.

Dark Traveller on another character since it's a reasonably cool title.