Evil Spirits (アクリョウ Akuryō) are souls with the appearance of a ghost in Mega Man Battle Network 6, which are capable of creating barriers to areas of the Net. The awakening of the Cybeasts has caused these Evil Spirits to swarm the Underground and then, all over CyberNet.
To break the barrier in one area, the player's NetNavi (MegaMan or a Link Navi) must first exorcise those spirits. They can only be fought using the "SoulWeapons" (ソウルウエポン) which an officer gives to the NetNavi at the beginning of the scenario. The weapons are SoulKnife (ソウルナイフ), SoulSword (ソウルソード), SoulAxe (ソウルアックス), and SoulGun (ソウルガン), each having a different range. If attacked but not destroyed, an evil spirit close to the player will strike back, dealing damage. Note that if an Evil Spirit is attacked from behind, it will die immediately.
