Mentor

From Devilfight 2 Help

If another player is especially nice to you, helps you beginning the game, answers your questions and so on, you can name him/her your "Mentor". Your Mentor receives the same amount of Souls from your very first soul purchase as a gift. Of every following purchase, the Mentor receives an additional of 10% as given Souls.

Every player can choose his/her Mentor ONCE, you can find the means to do it on your Nickpage.

If you want to be named a Mentor, help new players when coming into the game, answer their questions, make her/him a really mean Hell Dweller, and eventually he she/he will choose you.