For the others, I've got three different characters in the works, all following the same core archetype of amorality, whichever the reason is:
[list][*][color=silver]Magnus:[/color] A wizard whose body seems to be completely composed of quicksilver, who seeks to further his research on magic and decided the name of Fairy Tail would aid his purposes. Mad Scientist with Extravagant Villain peppered in whose magic is centered around western alchemy (Using reagents to produce different effects of elemental magic, and using his quicksilver as either defensive measures or for assorted tasks by transmuting it into one of the several metals known in alchemy: Lead, Iron, Copper, Silver and Gold).
[*][color=6ecff6]Freya:[/color] A young woman who uses a combination of nullifying magic and viscious close-quarters combat to reduce her enemies to a pulp, osmeitmes literally. A troublemaker that's always looking for a fight and that will end up wrecking havok if her bloodlust isn't sated, sometihng she hoped that would happen once she joined the legendary guild. Highschool delinquent-type of fellow, with shades of a berserker warrior. 
[*][color=f6989d]Lorelai: [/color]The middle daughter of a family of infamous Dark Mages, who merely happened to be at the wrong/right place at the wrong/right time to get recruited by Fairy Tail in the hopes of putting her magical prowess to good use. An ever-smiling and naive girl whose morality is quite skewed if not completely opposite to that of normal society due to her upbringing, who sees no issues in using her Bone Magic to create skeletal automatons that she can give simple commands to, if not simply manifesting structures made of bones for whichever purpose she has.[/list]

My pick will be most likely influenced by what others characters there are.