As a young Tal Shiar operative, her handler, Zhaban's mother, once revealed to her details about the rumored Zhat Vash organization and its hatred of synthetic lifeforms. In 2399, she revealed this information to Picard. (PIC: "Maps and Legends")
As well as extensive experience with forensic analysis, which she employed in 2399 to reveal details of the attack on Dahj Asha at her apartment in Greater Boston and of Dahj's correspondence with her sister, Soji, off-world. (PIC: "Maps and Legends")
Laris was played by Orla Brady.
While Laris more closely resembles Romulans of the Original Series era, who are physically indistinguishable from Vulcans, Zhaban possesses prominent brow ridges like the Romulans which appeared during The Next Generation era series and movies. Laris calls Zhaban and a Zhat Vash agent with similar ridges a "Northerner." (PIC: "The End is the Beginning")
Before her first onscreen appearance, Laris was featured in the Star Trek: Picard - Countdown prequel comic book, alongside Zhaban. According to the comic, before the supernova, she and Zhaban were agents of the Tal Shiar who fell in love, and then defected to aid Picard. In issue #3, a Tal Shiar commander addresses her as "Agent Avem".