Megalian, or Heady as it is known as inMega Man Battle Network 6, is a virus from the Mega Man Battle Network series. It has an Aura around it that blocks attacks below a certain damage amount. Also, these auras have elemental properties, which thus have weaknesses to appropriate elements. The player must first destroy the aura, before damaging a stationary or moving Megalian, with an attack damage higher than the specified number on the aura. When this virus attacks, it shoots its head out of its aura towards its target, making them vulnerable to attacks. Stronger variants have stronger auras (of different elements) and their attacks extend over more panels.
Megalians are tan with red bands and have a blue aqua aura that protects them. Weak to elec.
Megalian2s are green with yellow bands and have a red heat aura that protects them. Weak to aqua.
Megalian3s are purple with gray bands and have a green wood aura that protects them. Weak to heat.
MegalianEs are light-blue with green bands and have a yellow elec aura that protects them. Weak to wood.
HeadyEs are gray with gray-blue bands. They are similar to MegalianEs.
RareHeadys are blue with red-purple bands and have a yellow aura that protects them.
RareHeady2s are gold with light-blue bands and have a yellow aura that protects them.