Good question.

Mark Cuban invested in Unikrn as a VC.
Mark Cuban also participated in the token sale as well.

Read:
https://www.coindesk.com/celebrity-investor-mark-cuban-participate-first-ico/

https://www.cnbc.com/2017/09/25/ethereum-co-founder-and-mark-cuban-put-25m-toward-unikrn-esports-betting-platforms-digital-token-sale.html