Support — Red Mage / White Mage
King of Hearts is a Cardian, one of the magical card-soldier automatons created by the Federation of Windurst. Cardians are animated playing cards brought to life through Windurstian magic, and they serve as soldiers and servants throughout the nation. King of Hearts appears during the Chains of Promathia storyline and is notable for being more self-aware than most Cardians.
| Role | Support / Buffer |
| Main Job | Red Mage (RDM) |
| Sub Job | White Mage (WHM) |
| Expansion | Chains of Promathia |
| Login Points Cost | 100 points (Set 5) |
King of Hearts fills the same role as Koru-Moru: Red Mage support with Haste and Refresh. His White Mage sub job gives him a slight healing edge, while Koru-Moru brings Dispel (removing enemy buffs). In practice, both are excellent and the difference is small. Pick whichever you prefer, or use whichever you unlock first. If you already have Koru-Moru, King of Hearts is a solid backup for situations where you want a second support trust in your party.