neo-identity:

Marigender can be any of the following:

• A gender related to the planet Mars.
• A gender influenced by the planet Mars.
• A gender influenced by a kintype to the planet Mars.
• A gender related to the Greek God Ares or the Roman God Mars.
• A gender influenced by one’s devotion to any of the aforementioned gods. 
• A gender that can be otherwise explained or identified using the planet Mars.

Subsets of marigender include: 

• Mariboy
• Marigirl
• Marinonbinary
• Mariagender
• Mariandrogyne
• Mari[gender]
• etc.

-ap