Tuxedo Mask

Since no new Senshi was introduced in last Saturday's episode, I decided that it was time to vector our heroine's love interest, Tuxedo Mask.

Since he's associated with Earth, I decided to make him an Earth Pony.  His cutie mark is a black heart with a cross in the center, based on the symbol for Earth.

As an aside, since Tuxedo Mask holds the Sailor Crystal of Earth, he is technically Sailor Earth.  However, since he's not a woman, he doesn't get to call himself that.  So for there to be any kind of Sailor Earth in canon is if: a) it's an alternate universe where Mamoru is a woman, b) Mamoru died and his crystal was incarnated into a woman, or c) if he was flat out murdered and had his crystal stolen.

Sailor Moon
Sailor Mercury
Sailor Mars
Sailor Jupiter
Sailor Venus
Tuxedo Mask - you are here!

Sailor Moon (c) Naoko Takeuchi
My Little Pony (c) Hasbro