Here's a list of all Common Champions:

Nigel / Engineer
  • Battalion slot: Siege Machines
  • Passive: Increases Machine damage
Ralph / Miner
  • Battalion slot: Infantry / Ranged / Mounted
  • Passive: Increases Mining capacity
Agnes / Officer
  • Battalion slot: Infantry / Ranged / Mounted
  • Passive: Increases Infantry damage
William / Officer
  • Battalion slot: Infantry / Ranged / Mounted
  • Passive: Increases Mounted damage
Razeen / Officer
  • Battalion slot: Infantry / Ranged / Mounted
  • Passive: Increases normal damage defense for units in their battalion
  • Active: Increases the damage done by units in their battalion
Mei Lin / Officer
  • Battalion slot: Infantry / Ranged / Mounted
  • Passive: Increases normal damage defense for units in their battalion
  • Active: Damages the current target and reduces target's attack