Maris doesn't exactly have the greatest life. Her father's an alcoholic, her mother's an airhead, and to top it off, she's always broke. Why? Maris is a Thanatosian, and Thanatosians have six times the strength of a normal human being. Generally, this would not be a bad thing, except that the planet Thanatos blew up years ago, and the rest of the galaxy is not set up for people who are six times as strong as everyone else. So to keep the destruction her race does to a minimum, Thanatosians are made to wear harnesses that limit their strength. However, Maris accidentally destroys everything she touches and as all damages are docked from her wages, every mission she's assigned to by the Inter-Galactic Space Patrol takes her further in debt. (from wikipedia)
Presents herself as Sanzenin Nagi's little sister. It is revealed later on that her real intention was to obtain the "Black Camellia" from Nagi.
Age: 17 Buchi is a childhood friend of Ban. They have been practicing judo together since they were little. They fight a lot, but Buchi has never won a fight against Ban except for just one match. She appears in the one-shot Sick Cat, Sick Boy.
Mars made her debut appearance in Losing Its Lustrous!. She, along with Saturn attempted to steal the Lustrous Orb from the Celestic Town museum. She also appeared in Double Team Turnover! where she informed Cyrus that the Red Chain project is nearing completion. Mars appeared again in Steeling Peace of Mind! along with her Purugly. She had brought the Spear Key to Iron Island where she activated the ruins in the island to find the exact location of the Spear Pillar in Mt. Coronet. After failing to complete the task in Saving the World From Ruins!, she attempted to blow up the island on Cyrus's orders but she failed due to Riley and his Lucario. She later appeared in The Needs of the Three! and The Battle Finale of Legend!. After the disappearance of Cyrus, she became distraught and even tried following him, but was stopped by Saturn. The duo, along with Jupiter, were later arrested.