I believe when moon gave birth to Star she knew she was a part of a prophecy of Star being their universes Great Evil/Lucifer. A part of the Darkness Spell she used on Toffee came at a price of her first born. This is also why Queen Moon, and the others are very strict, and watchful of Star. Here's more on my Star vs has biblical symbolism as well. How Star name as meaning as well. For Starters the horns are because Star is a fallen angel thrown from Mewi onto earth, and now spots devil horns. Because she didn't like the way god(her Mother) did things.
Lilith is viewed as the embodiment of the Goddess, a designation that is thought to be shared with what these faiths believe to be her counterparts one of which is Ishtar talk about here. Star wields her wand which resembles the Star of Ishtar which is Ishtar's “MAGIC WAND" It actually says magic wand.
Istar Eshnunna, the Akkadian counterpart of Sumerian Inanna the goddess of fertility, love, war, sex, and power. She represents the planet Venus, 'unique star'. Reportedly, Inanna means Great Lady of An, god of heaven or, goddess of life. The Hebrew word that referred to the morning star was translated into Latin as Lucifer. Morning Star which comes from Venus. (This is star) Marcro is comes from god of war Mars in myth, and Diaz which means days. In this we have the Day of Wrath soon to come. The union of Venus and Mars held greater appeal for poets and philosophers, and the couple were a frequent subject of art, as well as adultery myths.
Marco wields his Monster Arm which resembles the Spear of Mars with the arms pointed tip. Some quick detail on spear.
A relic or fetish called the spear of Mars. The spear was said to move, tremble or vibrate at impending war or other danger to the state
Both symbols represent the different sexes. The blood moon wasn't a sign of love, but a sign of tragedy of lovers vs lovers, and the end times. Otherwise known as Dies Irae