Sardon

Sardon, Fist of Crota is a boss at the end of the Story Mission, Fist of Crota. He wields a Hive sword similar to the Sword of Crota and swords wielded by the Blade of Crota.

Description
He looks like a Hive Knight, but bigger than them, and still smaller then Sardok, Eye of Oryx.

Tactics
Before he spawns, You are poisoned with A Dark's Burden, which doesn't allow you to use certain abilities. Both entrances are sealed by a shroud of darkness. If you are in range, he uses his sword to create a ground slam attack at you. He will try to melee you if in range. He chases you if not in range.