Trey Clover/Relationships

Ace Trappola

 * From the same hometown

Deuce Spade

 * From the same hometown

Riddle Rosehearts

 * Trey's childhood friend
 * From the same hometown

Rook Hunt

 * They're both in the science club.

Alchemi Alchemevich Pinka (Che'nya)

 * Trey's childhood friend.