The Ancient Dragon is a gold-crowned monster found in the Forest Shrine area in Origin Island. It is located at the top of a long flight of stairs to the north of the area. It can only be battled with the DLC.
Paladin: Divine Dragon King (God-in training)
Reward: 2,500 Stars
The Ancient Dragon is a very powerful foe and is one of all of the dragons that has a bulldoze attack that can inflict high damage. Also all of its attacks involves voltage which is part of the wind element. I suggest you craft sturdy armor with Wind Element + as an extra material to reduce the possible amount of damage taken. Bring a strong ally with you like Jinx, Fern, Celestia, Ophelia, ect.