Darcon is a boss found in the Dark Dungeon in Trevor 3. During this battle, four dark orbs will appears on-screen with only one being the actual boss. Occasionally, the real Darcon will flash its true form indicating which one the player should attack.
Darcon has 5 HP. Once Darcon is defeated, the player acquires the dark key.
If the player has skipped any of the previous dungeons, Darcon will still comment as if the player has already defeated the other bosses.