Sponsored by Tosh's lolicon tendencies, here's an excerpt from Illya's voice actor Kadowaki Mai, during her guest appearance on the FGO Chaldea Radio, hosted by Takahashi Rie and Tanaka Minami, translated by myself.
Takahashi Rie is known for her insane laughter and shocking contrasts between her personality and her characters, such as Megumin in KonoSuba and Emilia in Rezero. She currently plays Mashu in Fate/Grand Order. Her typecast is usually the straight man that retorts other people's idiocy. She wants to get tied up and insulted by child Gilgamesh and stare at Alexander's thighs.
Tanaka Minami is a huge fan of the Fate series, particularly Fate/Extra CCC, and is known for her work in Wake Up Girls!, Takkyuu, Hanayamata and as of late, Kakegurui. She plays Nitocris in Fate/Grand Order. Her typecast is the klutzy girl that talks a big game but is generally clumsy. She wants nothing more than to cook for Cu Chulainn and to let him fish idly as long as he wishes.