Woohooo didn't know Marlon Vera become a Roobet brand ambassador, it would be better if Roobet can reach Oliveira or McGregor since they're very popular on UFC.
I don't really follow the UFC, so I don't really understand how popular Marlon Vera is but compared to McGregor people will be more aware of McGregor and it could be that his level of popularity makes Casino have to spend more to sign him become a brand ambassador, but it could be also that Roobet is targeting the Latin America market to be able to get a lot of players from there.
However, if you want someone from the UFC to represent your business would it be Conor McGregor who has lately been having very much a bad reputation? There are stories slowly coming out that he is involved in the Irish mafia in his hometown which the leaders are his childhood friends.
Marlon Vera is a humble fighter who is also a family man with 3 children. One of those children is a special child that he loves dearly which also gives a very good impression as a brand ambassador for a business. His fee might also also be much cheaper compared to Conor hehehee.