Can Kucoin hacker hold Dai?

I was wondering if the Kucoin hacker deposits Eth and mints Dai, will Maker multisig be able to freeze his Dai? And if multisig has the power, will the hacker’s funds be frozen?

There is no MakerDAO multisig. The Foundation uses a multisig to hold the Foundation treasury funds, but it’s just a treasury with a bunch of MKR in it.

Dai can’t be frozen. There is no blacklist or freezing functionality in the DAI ERC20 contract.