IMO, it's too much of a coincidence for Karen not to have copped that moniker either directly or indirectly as a result of the thread or gossip about the thread I started sometime back re Wu-Tang name generator aliases. It's Maia Shibutani who is the
Quiet Assassin. Karen may not have liked the name that actually comes up for her on the Wu-Tang mess.be website.

I don't blame her.
In any case, if you go there and don't like the name that comes up, you can put in your full name or a nickname and see whether something you like better will generate. Or, you can grab any moniker you prefer and make it your own, like Karen apparently did.
BTW, Ashley Wagner is
Tha Ambassador, which seems to have been eerily accurate at points during her career, but no longer. Or maybe it's still so in the sense of her ability to fashion her own skating career and now to transition toward something else she finds fulfilling.