Hatius Cosaintus
Hatius Cosaintus
Release date 5 March 2015 (Update)
Members only? Yes
Race Human
Quest NPC? No
Location Lumbridge
Sells items? No
Gender Male
Notable features Taskmaster for the Lumbridge & Draynor Diary.
Attracts a lot of attention.
Hatius Cosaintus location
Hatius Cosaintus chathead

Hatius Cosaintus is located just outside of the Lumbridge Castle. He awards players the Explorer's ring for completing easy, medium, hard and elite tasks of the Lumbridge Diary.


  • His name is a pun based on the phrase, "Hate us cause they ain't us", due to the fact he is wearing very rare and highly coveted equipment.
  • His out of place and unrealistic appearance has been criticized by players which led to the proposal to have him removed in Poll #50. However, with only 56.1% voting 'Yes' it didn't pass.[1]