What is the unmentionable times in anthem?

It seems you're asking about the "unmentionable times" in the game Anthem. While there isn't a specific event or period referred to as "unmentionable times" within the game's lore or narrative, it's likely you're thinking about the following:

The Cataclysm: This was a catastrophic event that ravaged the world of Anthem, causing the emergence of the Shaper creatures and the creation of the Anthem of Creation. This event is a key point in the game's history and is often mentioned in the lore.

The Dominion: This was a powerful faction that dominated the world before the cataclysm and attempted to control the Anthem of Creation. The Dominion's actions led to the cataclysm, and their legacy is still felt in the game.

The Rise of the Freelancers: The Freelancers were a group of individuals who fought back against the Dominion and the Shapers. The game itself focuses on the rise of the Freelancers and their efforts to protect the world from the Shapers and other threats.

If you have a specific scene or event in mind, please provide more context, and I can try to identify it for you.