Mercenary

Mercenary is a class for heroes in Arcanium.

"Mercenaries come in many shapes or forms. They are hired-guns that will enroll for glory, vengeance or fame. They are well-rounded Heroes that have a major impact on Minions, by upgrading or assisting them in battle. Mercenaries will fit well in any squad needing a stronger font line."

- from the official site

Passive Bonus
Spoils of Battle: Significantly increases the Hero's Gold earnings

List of mercenary heroes
Mercenary heroes include:
 * Carrion
 * Sparks