Do Kwon has never disclosed his involvement with this failed project. CoinDesk wrote that although their "default position is to respect the privacy of pseudonymous actors with established reputations under their well-known handles unless there is an overwhelming public interest in revealing their real-world identities", there was now "such public interest as Kwon’s UST stablecoin death spirals, wreaking havoc across the broader cryptocurrency market. Amid this precarious situation, investors deserve to know that UST was not Kwon’s sole attempt at making an algorithmic stablecoin work." It was not made clear in the article when CoinDesk first learned of Kwon's connection to Basis Cash, though the authors later stated they'd learned of it the night before they published.
In a scoop published shortly after the catastrophes began with TerraUSD and Luna, CoinDesk reported that Terraform Labs CEO Do Kwan had also previously led a different failed stablecoin project. Using the pseudonym "Rick Sanchez", Kwon created "Basis Cash" (BAC), another algorithmic stablecoin. Basis Cash also aimed to peg to the US dollar, but never actually achieved this value. The coin has traded far below $1 for most of its existence, dropping and remaining below $0.01 in early 2021.