Master of None: Though he gets a variety of training in various disciplines, both martial and political, he never really gets top-level good at any of them.
Unwanted Harem: Marries Astarte deLuna for political reasons, but only has eyes for Kamil Olfski. The girls get along just fine, but Astarte's mother is NOT happy about it, and the final book in the series is about her trying to have Kamil assassinated.
Derek Sagan
The Atoner: In Ghost Legion, Sagan lives in a monastery as a lay brother, performing the most physically difficult and unpleasant tasks, barely eating and sleeping and almost always silent. He chose this life as an atonement for his sins.
Badass Cape: Red, which he wears with his Roman-style armor.
Bling of War: someone really fancied Ancient Rome.
Everyone Calls Him "Barkeep": Throughout the first book, he's referred to as "The Warlord" by everybody except President Robes.
Face–Heel Turn: when he betrayed the king and supported the revolution. And then Heel–Face Turn back again, joining forces with Maigrey in order to take down the bad guy and install the rightful king, son of the deceased one, back on the throne.
Cultured Badass: Both she and Sagan are well-read and fond of classical music. She uses a quote from Yeats's poem as an activation code for the space-rotating bomb.
Daddy's Girl: Was her father's favorite child due to her tomboyishness and warrior's spirit.
Scars Are Forever: Her past confrontation with Derek Sagan has left her with a nasty scar on her cheek.
Star-Crossed Lovers: with Sagan. They were once lovers, but parted ways when he joined the rebellion against the royal dynasty. Turns out her and Sagan's mutual feelings are not completely gone even after 17 years...