I've seen the future and you're not in it!
~ Rubeus
Esmermaude, no!! Don't leave me!! ESMERAUDE!!!!
~ Rubeus, last words before his death (Viz dub).

Rubeus, also known as Crimson Rubeus, is a major villain in the Sailor Moon series.


Loyal to Prince Demand, and one of the founding members of the Black Moon clan, Rubeus was sent back in time capture Chibiusa and shatter the Legendary Silver Crystal. Rubeus sends the Specter Sisters on missions to find the girl while dealing with the Sailor Guardians. Following the capture of Sailors Mars, Mercury, and Jupiter, Rubeus confided his mistrust towards Wise with Saphir while Usagi was held captive in Black Moon Castle. After overhearing Neo Queen Serenity speaking to Prince Demand through Sailor Moon, Rubeus begins to question Wiseman and ended up being murdered when he confronted the hooded figure while fleeing the collapsing castle.

90s Anime

Rubeus and the Ayakashi Sisters were sent back in time to capture Chibiusa and the Legendary Silver Crystal, while receiving instructions from Wiseman. At one point all five of them faced off against the Sailor Scouts, with Rubeus fighting Sailor Moon before he was forced to fall back. After the Ayakashi Sisters have left the Black Moon Clan, Rubeus kidnaps the Sailor Guardians to force Sailor Moon to bring him Chibiusa and the Silver Crystal. A battle ensues before Chibusa destroys ship's controls and cause it to self destruct.

the crystal that controls his spaceship causing it to catch fire. After Sailor Moon attacks Rubeus, the Sailor Scouts are freed and they, Rini, and Sailor Moon teleport away, leaving Rubeus onboard his burning ship. Rubeus is confronted by Esmeraude and begs her to take him back to their time. But Esmeraude instead leaves Rubeus to die for his repeated failures, lying to Prince Demand that Rubeus died in battle.



  • Her original voice actor Wataru Takagi also voiced Obito Uchiha. His voice actor in Sailor Moon Crystal Hiroki Takahashi voiced Impmon.
  • His English voice actress in the Viz version and Sailor Moon Crystal, Steve Staley, voiced Kadaj and Griffith.