Alexander is Quintus' Greek friend who appears in stage 10 and mons iratus in stage 12 of Book 1. He has two brothers, Thrasymachus and Diodorus, and is admired by Lucia.

Alexander and Quintus were both taught by a teacher named Theodorus.

In controversia, Stage 10, Alexander debated with Quintus that the Greeks are better than the Romans.

In statuae, Stage 10, Alexander buys three statues for his brothers birthday present. They fought over the statue until Quintus resolves the problem by giving each of Alexanders brothers the statue that represents them the most.

In Lucia et Alexander, Stage 10, Lucia talks about how clever and handsome Alexander is to Melissa and when Melissa asks if he delectat her, she denies having feelings for him.