Majin God

Majin God is the form accessed via the God Ki gamepass. It is the God form given to the Majin race, having the same red aura as Super Saiyan God.
This is an unlockable form that requires the God Ki gamepass. To unlock this form, and Perfected God, Blue-Eyed Namekian God, Red-Eyed Namekian God, you must select a Majin or Namekian or Bio-Android. Equip a halo on your character and teleport to Otherworld. Search the towers and find a group of NPCs. Talk to the Majin that is in the group of NPCs, and when you click the correct answers, you will be given the Majin God, Perfected God or Blue-Eyed/Red-Eyed Namekian God form.
To explain further, you must repeat this with every race, it does not unlock every form for the three races all at once.