also: ファミリアー
noun
familiar; attendant spirit or creature
A katakana noun corresponding to the fantasy or occult sense of 'familiar': a spirit, animal, or creature that serves a magician, witch, or similar character. It is not the ordinary Japanese way to say that a person or thing is familiar or well-known.
魔法使いは黒猫のファミリアを連れていた。
The wizard had a black-cat familiar with him.
このゲームでは
In this game, you summon familiars and have them fight alongside you.