Epic War 3Edit
In Epic War 3, Great Diablos is unlocked by completing Cave of Trial 3. Great Diablos also, unlike the Fire Demon, and the Blue Dragon who rarely appear in the battle with the final castle, frequently appears in this battle. Great Diablos is almost always the titan who appears in this battle.
Epic War 4Edit
In Epic War 4, Great Diablos must be purchased instead of unlocked.
Epic War 5Edit
In Epic War 5, Great Diablos is called the Earth Dragon. The Earth Dragon is the boss in Extra Stage 3, and is unlocked by completing Trial 2.