Markoth

Hunter's Journal
 

Behaviour and Tactics
Markoth has three abilities: Markoth's shield constantly orbits around him, blocking attacks and dealing contact damage.
 * Teleport: Occasionally warps from one part of the arena to another.
 * Nail Summon: Creates a nail that aims in the player's direction for a moment before flying forward
 * Shield Cyclone: Spins his shield in an increasingly wider radius before retracting it.

Healing during his Nail Summon is quite difficult, as the Nails pass through the environment. Keep moving, and get attacks in whenever the opportunity arises. The nails stop homing in as soon as they begin to move, and combined with their somewhat slow travel speed, this makes them relatively easy to dodge.

Wall-sliding with the Mantis Claw and attacking with Vengeful Spirit or Shade Soul is a good tactic as Markoth moves relatively slowly and has a large hitbox.

His Shield Cyclone attack is the best time to heal, as the shield has limited range. Alternatively, dash into the circle when it widens and Markoth will be completely open to attacks until the shield retracts.

Once he takes enough damage, the Nail Summon attack becomes more frequent and he gains a second shield opposite the first one, which stays close to him during Shield Cyclone.

Location
In order to reach the location, you need Shade Cloak upgrade to bypass the Shade Gate standing before his room.

Trivia
Маркоф
 * Markoth claims to never have been defeated in combat, so presumably what killed him was old age or disease. However, it's possible that his remnant simply doesn't remember his defeat and/or death.
 * Thistlewind, a deceased moth in the Glade of Hope mentions an another adventurous moth in the edge of the kingdom. It's possible that this is Markoth, as he is found in Kingdom's Edge and appears to be of the same species.