A group of actors is suing Lovo, an AI voice generator over claims the company used their voices without permission.

The plaintiffs are Linnea Sage, who voices Black Cat in the Marvel Snap video game and Paul Skye Lehrman, who has starred in “Blue Bloods” and “New Amsterdam.”

Their 37-page class action lawsuit, filed in the Southern District of New York, alleges that Lovo fraudulently used their voices to “create millions of voiceover productions without permission or proper compensation.”

Lehrman uncovered his voice was being used by the company while researching for a role. Meanwhile, Sage was paid $400 by someone called “tomlsg” to help produce test scripts for radio ads. She later discovered “tomlsg” was Lovo co-founder Tom Lee.

“[Lehrman and Sage] did not grant Lovo any right to market their voices,” according to the lawsuit. “The product that customers purchase from Lovo is stolen property. They are voices stolen by Lovo and marketed by Lovo under false pretenses: Lovo represents that it has the legal right to market these voices, but it does not.”

Founded in 2019, Lovo claims to offer “hyper-realistic” AI voices. Its text-to-speech software enables users to create voice-overs for videos using natural language. Its platform has a built-in editor, where users can create voice-overs for marketing materials or training videos along a video editing timeline.

Lovo’s website claims to have more than 2 million users who can choose from more than 500 voices across 100 languages.

The AI company sources its voices from voice actors, compensating them for their work. The class action lawsuit brought against Lovo, however, claims the actors did not agree to even be featured on the platform, let alone receive compensation for their alleged services.

“For plaintiffs and other members of the class who have not agreed to Lovo’s terms, the continued unauthorized use of [the] plaintiffs’ voices is theft of service and misappropriation,” the lawsuit says.

The actors argued they couldn’t have worked with Lovo under SAG-AFTRA rules prohibiting them from taking on roles not covered by the union’s contract.

Since Lovo holds no such agreement with SAG-AFTRA, the company’s use of their voices could put them in involuntary breach of their union obligations and contracts, the pair contend.

The company is also accused of using Sage’s voice in one of its promotional materials shown to investors in 2020.

“Lovo has raised millions of dollars in venture capital using Sage’s voice in unauthorized and uncompensated presentations that showcase the Lovotechnology,” the lawsuit says.