Feel free to tell me who I missed. I know I did.
Aleksander- Leviathan, Behemoth, Goliath
Ash- Iron King, Iron Daughter, Iron Queen, Iron Knight
Robin  (Puck)- Iron King, Iron Daughter, Iron Queen, Iron Knight
W. W. Hale- Heist Society, Uncommon Criminals
Gale Hawthorne- The Hunger Games
Peeta Mellark- The Hunger Games
Astley- Need, Captivate, Entice
Kaito- Cinder
Zach Goode- Cross My Heart and Hope to Spy, Don't Judge a Girl be Her Cover, Only The Good Spy Young, Out ofmTime
Dodge Anders- The Looking Glass Wars
Finnik Odair- The Hunger Games
Archer- Fire
Prince Po- Graceling 
David- Model Spy
Marcello- Waterfall