Ambrose is currently 11th in the line of succession to the Vintic throne, and Kvothe describes him as richer than God. Ambrose has a bad reputation, particularly for mistreating women. He is depicted as a high-ranking gentleman with soft, pale skin and a constant scowl. He writes poetry and is also a Scriv under Master Lorren.
In the Chronicle
Ambrose develops an antagonistic relationship with Kvothe starting with their first meeting in the Archives. Eventually, their rivalry leads to Kvothe's dismissal from the Archives when he is tricked by Ambrose into entering the Stacks with an open flame. This series of events leads to an ongoing feud and clash of wills between Kvothe and Ambrose throughout the Chronicle. Most notably, this conflict leads to Kvothe first speaking the name of the wind after Ambrose steals and breaks his lute.
Even after the incidents of the first novel, Kvothe and Ambrose continue their hostilities toward each other in catastrophic ways. Their ongoing feud eventually finds Kvothe poisoned by the alchemical poison known as a plum bob.
Ambrose enters a short relationship with Denna but drives her off by being overly touchy on their second date and pushy on the third. He kept hold of Denna's ring, having left it with a jeweller to adjust it, leading to Kvothe breaking into Ambrose's rooms, needing to discover a schema for, and eventually create, a Gram, and Ambrose's possessions being burned.
It is suggested by Sleat that Ambrose is the one who hired men to attack Kvothe in Imre during the first novel. Ambrose has so far thwarted all of Kvothe's attempts at getting a local patron, forcing him to accept an offer to leave the university to work for the Maer Alveron.
We first meet Ambrose in the Archives entrance atrium immediately following Kvothe's admissions interview where he rudely informs Kvothe that he can not be admitted into the Archives so soon after being admitted to the University.
On Kvothe's third visit to the Archives, both Ambrose and Fela are sitting at the entrance atrium desk. Ambrose is leaning close to Fela, reciting a poem he had written for her. It's obvious to Kvothe that Fela is uncomfortable, as she is trying to lean away from Ambrose but he is resting a hand on Fela's neck holding her in place.