Chroma Darksoul

Full Name: Chroma Darksoul
Species: Youkai Magician
Titles: Colourful Magician, Servant of the Demonic Princess
Age: Unknown (looks to be around 15, but definitely isn't)
Height: 5'3"
Weight: 66kg
Birthplace: Unknown
Current Residence: Demon Rose Palace, Somewhere in the Moonbeam Archipelago (Forest of Magic in post-Demonic Princess works).
Occupation: Unknown
Abilities: Use of seven-coloured magic, manipulation of colour, ability to make two people switch bodies (rarely used)
Relationships (OCs- To be added over time):
Pretty much every other OC is her enemy (until the end of Demonic Princess), except....
Miromi Thorne- Mistress
Miyuka Inaba- Ally
Ren Zero Pendragon- Acquaintance
Relationships (Touhou Canon):
Every Touhou character is her enemy until the end of Demonic Princess, when she starts gradually befriending them.
Relationships (Other):
Jaden Yuki- Enemy (Friend after Demonic Princess)
Yugi Mutou- Enemy (Friend after Demonic Princess)
Yusei Fudo- Enemy (Friend after Demonic Princess)
Lync Volan- Acquaintance (Before Demonic Princess), Enemy (During Demonic Princess), Friend (After Demonic Princess)
Alice Gehabich- Acquaintance (During Demonic Princess), Friend (After Demonic Princess)
Medusa Gorgon (Soul Eater)- Acquaintance
Crona Gorgon- Friend (Before and during Demonic Princess), Close Friend (After Demonic Princess)
Biography: Chroma used to stalk travellers and mess with their minds in Chroma Forest before Miromi found her and offered to make Chroma her underling. The rather bored youkai magician was more than happy to accept, on the condition that she got a high ranking in Miromi's empire. From that day up until the end of Demonic Princess, Chroma served Miromi with the utmost loyalty (or so Miromi thought, anyway). However at the end of Demonic Princess, she loses her mistress, at which point Koko offers her friendship to Chroma. She gratefully accepts, and makes the decision to right all the wrongs she caused while working under Miromi. She also manages to befriend others that were formerly her enemies, and becomes close friends with Crona. 
Trivia:
*A notable fact is that Chroma eyes constantly change colour.