As a poster-child for the Aligment system in Going Rogue, Pre-Praetoria Desdemona shows up in only Tip and Alignment missions for Rogues and Villains showing her transition from Villain to Hero as shown on her wiki page, as well as one Blueside alignment mission. Her counterpart Maelstrom similarly largely appears in Blueside Alignment missions. As for appearances not listed there: She then shows up in the Underground Incarnate Trial, Belladonna Vetrano's arc and the Magisterium Incarnate Trial. Post-Praetoria shows up in Provost Marchand & Mr G's Primal Earth arcs.