Obor
Obor, the Hill Titan, is the hill giant boss residing in his lair, located behind the locked gates found at the western wall of the hill giant area in the Edgeville Dungeon.
A giant key is needed to unlock the gate leading to Obor's lair for the first time, which may be acquired by killing Hill Giants. Subsequent access to the lair does not require a key. The key will not be consumed when unlocking Obor's lair. When the player first enters Obor's lair, they will be in a safe zone, where they must climb down the rocks in order to fight him. Obor attacks with Melee and Ranged.
After defeating Obor, the chest present in his lair can be opened for loot by consuming the giant key, similarly to Bryophyta.
Obor can be fought repeatedly by attempting to open his chest. This will trigger him to respawn shortly after, regardless of whether the player has a giant key in their inventory.
Guide, gear, inventory, locations, pictures and money making rates from the OSRS Wiki (CC BY-NC-SA 3.0).