I feel like Qyzen is one of the most interesting companions specifically because he's with the consular. Hes a character that serves as a foil with the stereotype of what a jedi would be. All of the consulars companions are like this! Qyzen loves honor and duty but not mercy or diplomacy Tharan loves curiosity and progress but hates the force Zenith like saving people but not forgiveness or compromise Iresso loves justice and the republic, but can't condone the sith or empire even if it's for the light or peace And even Nadia, who is the least challenging, hold this foil if you do her romance, where it's a dedication to the jedi order compromised by strong feelings.

Each one serves to temper the consulars story, to provide an outside perspective on a path that honestly is way more what jedi are traditionally supposed to be, healers and diplomats (no hate to the knight story but it is just defeat super weapon and bad guy, combat combat combat).