- Champions can be used to castle, rescue a Hostage and target a Behemoth
- Champions can be swapped by a Shieldsman or a Guardian.
- Champions can be revived by a LifeStone and targeted by a Comet.
- Champions can trigger Minotaur's "enemy King swap" ability.
- Champions can be recalled by a Beacon.
- Champions cannot be frozen by Comet's trigger, targeted by Tiger's unblockable attack, or charmed.
- As of v0.49, the lowest cost of champions is 0 (Greed+++), followed by 4 (Not counting any Greed tiers). Along with 0 for minions, the lowest cost army is 12.
- GeminiTwin is the only unobtainable Champion in the game.