Maldron

Don't trust a phantom, you can lock on.

Dark Souls II - Crown of the Ivory King.
It took several attempts to
1. remove the phantom from the lever;
2. pull it;
3. watch at the phantom running through the gate;
4. return to the bonfire;
5. defeat the mini-boss (Snowy Covetous Demon);
6. poison the phantom;
7. jump down to the place, where the mini-boss was;
8. finish him.

Defeated the Burnt Ivory King between 3. and 4.
Frigid Outskirts, Loyce Souls and this guy made the DLC unique.