Effervescent is first introduced during Victoria Dallon's interview with Foresight. There, Effervescent comments how, while better than most when it comes to getting a read on people, they are unable to get a consistent read on Victoria. She surmises it might be due to her emotion manipulating powers. This uncertainty is a contributing factor to them voting 'no' to offer her a space on their team.
Effervescent moved into The Wardens Bunker on semi-permanent basis, since she was not able to maintain conspiracy due to personal reasons. She assisted in arresting Orchard and Victoria's later dealings with Mr. Bough.
She was present during the assembly of the second team aiming for Teacher's stronghold.
↑Anelace put out his hand to shake. I shook it. Effervescent didn’t offer me anything, and I didn’t push.- Black 13.5
↑ 2.02.1There were capes who could, but who were sitting this one out, because they had other shit going on, or because the stress of it was too much. Effervescent was one, and she’d been open about the reasons why: she had a substance abuse problem and acting like she’d been pushed to her limit put her at the cusp of a slippery slope. - Excerpt from Breaking 14.2
↑Flare 2.1: Effervescent was an emotion manipulator with an emphasis on stunning people. Relay was capable of some complex moves with teleportation I wasn’t sure I had a grasp on, most of which seemed to amount to them teleporting to where others were, shunting that person to a random position elsewhere, and he also had some ability to communicate without words, both sending and receiving.