This is a MetalStorm: Online plane.
The Sky Demon benefits from speed +18%, agility +14%, damage +13% and evasion +12%. It is a weapons class plane and is currently unlocked at the highest level of all planes-- level 35
The speed, agility and evasion makes the Sky Demon one of the best dodgers in the game.
- This is a B-2 Spirit stealth bomber
- Before, you needed to be level 50 to unlock it.