Agent Ace is a black gelding. 
|First Appearance:||Take the Reins|
|Last Appearance:||Take the Reins|
|Stables:||St. Alexander's School for Boys|
|Stables Formerly At:||Unknown|
Agent Ace is briefly mentioned in Take the Reins when he and Alex attend the Connecticut State Horse Show. He and Alex have a good ride with no faults, but take third place. He rides up to Sasha and Charm, and Alex congratulates her.
- ↑ Revealed in Take the Reins, pg. 125