Fleria (sometimes mistranslated as Furelia or Phrelia) was one of the first Tochikan monster breeders, and serves as your assistant in Monster Rancher 3. Gameplay follows her from being a young girl to a young woman, and in later games it is noted that she is worshipped as a goddess in modern times for her famous advancements in monster breeding and training. In Monster Rancher 1 you can find a statue of her that can give your monster stat gains when combining.
She (alongside your character in Monster Rancher 3) becomes the first breeder ever to win all Great 5 tournaments and defeat the dreaded Ragnaroks. Many other older breeders have tried but failed (including Mosha and Master Lus).
Compared to most assistants, Fleria seems a bit brash and spoiled. She is always trying to charm people into doing what she wants, and if that doesn't work she gets very heated and even bullies people sometimes.