Leaders function as the different factions that are playable during the game. in total Circle Empires contains 26 leaders. New leaders are unlocked by playing the previously unlocked leader, an example being if wanted to unlock Demian the dragon then you would first have to play through a match as Wyona the Water Queen.
The current list of leaders are as follows:
| Order | Name | Bonus | Unlocked from |
|---|---|---|---|
| 1 | Wolfam the Warlord | Starts with: +500 Wood +500 food | n/a |
| 2 | Wilberforce the Wizard | Starts with: +2 gold pile. Each claimed circle gets: +2 Training dummy. Technology research price reduced by 40% | n/a |
| 3 | Barg the Barbarian | Each claimed circle gets: +1 axe thrower. +15% Damage to all creatures and buildings that can attack. | n/a |
| 4 | Ephius the Economist | Starts with: +3 Worker +2 Bank. | Barg the Barbarian. |
| 5 | Barandur the Builder | Starts with: +1 Catapult. Each claimed circle gets: +1 Wood Wall. +6 armor to all your buildings and walls | Ephius the Economist |
| 6 | Sentia the Spellbound | All work is done 100% faster, but workers turn into pumpkins if they stop working | Barandur the Builder |
| 7 | Laura the Lifegiver | Starts with: +3 Healer. +4 armor to all melee units. | Sentia the Spellbound |
| 8 | Xee and Xess the Demon Couple | Starts with: +1 Bank. Each claimed circle gets: +1 Poison Tower +2 Zombie | Laura the Lifegiver |
| 9 | Morgoth and Daughters | Starts with: +1 Goblin King. Each claimed circle gets: +1 poison tower | Xee and Xess the Demon Couple |
| 10 | Swifty the Scavenger Lord | Each claimed circle gets: +8 Wood rouble. Bonus resources from kills: +200% | Morgoth and Daughters |
| 11 | Darius the Druid | Starts with: +1 Forester. Each claimed circle gets: +2 Forester | Swifty the Scavenger |
| 12 | Mindy the Mushroom Mage | Each claimed circle gets: +3 Healing Mushroom +2 Extra Life Mushroom. +25% starting xp for all your base level units and buildings (up to 300 xp). | Darius the Druid |
| 13 | Wyona the Water Queen | Each claimed circle gets: +1 Fishery +1 Gold-Fish. +20 more effective wood harvesting. You will get more wood from each tree. | Mindy the Mushroom Mage |
| 14 | Demian the Dragon | Starts with: +2 Gold pile. All work is done 40% faster. | Wyona the Water Queen |
| 15 | Darkness Dominion | Starts with: +1 Vampire +1 Forestopia. +4 armor to all your melee units. | Demian the Dragon |
| 16 | Melee Mercs | Starts with: +1 Gold pile. Each claimed circle gets: +1 Haste Temple. Technology research price reduced by 40%. | Darkness Dominion |
| 17 | Nature Nurturists | Each claimed circle gets: +2 Poison tower +3 Tree | Melee Mercs |
| 18 | Arcane Alliance | Starts with: +2 Namtar Worker +1 Random creature recruitable by this leader. Each claimed circle gets: +1 Fire tower | Nature Nurturists |
| 19 | Greedy Guild | Starts with: +1 Barbarian Worker +1 Goblin worker. Each claimed circle gets: +1 Poison tower. Bonus resources from kills: +100% | Arcane Alliance |
| 20 | Science Society | Each claimed circle gets: +1 Frost tower +1 Mystery Box. Technology research price is reduced by 30%. | Greedy Guild. |