Ashtaroth is the mini-boss of Valstrath, preceding the mini boss, (his familiar)Mynos. Ashtaroth only needs to have lost half his health before he "dies" and uses a move similar to Battle Mage's 3rd grade black magic skill once he does, before Vanessa of the Temple of Cuatal comes in and uses Soul Effect to stop him. He is supposedly afraid of the Grand Chase's power, as he was supposed to guard the Temple of Ascendancy but instead, came out to defeat Grand Chase. Due to him being the guardian of the Temple of Ascendancy it is very likely Ashtaroth will reappear again as a mini-boss.
Attacks
Ashtaroth's attacks are mostly a mix of sword play and magic. He has a basic combo he uses which can trap the players, and ends with a small burst of magic. He can also shoot out a small ball of energy that shoots out in a straight line and disappears off the edge of the stage or if it hits a player; he lets out a small chuckle before the move actually releases, allowing players to try and get out of the way. Ashtaroth can also use an attack similar to the Spell Knight's Kanavan Strike, but with a much wider range. Sometimes he jumps up and does an attack that is similar to the Muse's Magic Move.
Once the players "defeat" him, he uses an attack similar to the Battle Mage's 3rd grade black magic skill that doesn't hurt the players, as it is part of a cutscene. He does use this move occasionally in the next room, as he is a part of the battle, hanging in the top right of the stage, Players cannot attack him.
He can hurt players with the mentioned skill during the boss battle, denoted with a Danger warning, and if he has a special status (petrify, freezing, etc.) it can affect the players if they are hit. When the Danger warning comes Players then must hide in the very bottom left corner of the stage under Vanessa or they can die. There is also an uncommon glitch that will result in Ashtaroth fighting alongside Mynos itself, triggered by hitting Ashtaroth when he does the danger attack.
Trivia
thumb|300px|right|Defeating Ashtaroth (Glitch)
- This glitch as shown in this video is done by hitting him at some time while the DANGER warning is present. He will return back to his position if he attempts to cast Deep Impact again, forcing you to repeat the process.
If you manage to defeat him, Ashtaroth is removed from the battle, and he makes this loud "Ching" sound. If the DANGER appears again, no meteor shower will occour. One might say this is "Glitch Abuse", but it was confirmed to be not, as there is no advantage to winning over Ashtaroth (just a lot of time wasted and really crappy EXP).
- He is currently the only boss monster in NAGC that is above level 65 as Ashtaroth is lvl 66 on 3 star Valstrath. The level limit of all players with the exception of the Game Masters is 65.
- Due to the fact that his fighting style is almost the equivalent of Ronan's as a Spell Knight, players speculate that he may have been one of the Queen of Kanavan's guardians before the main storyline of the game.
- His name is derived from Astaroth, a powerful demon.
- He wears the Grand Champion Set that was released during the Champion Ticket Event.