Yu-Gi-Oh! episode 203: "The Intruder - Part 2"
Mana (マナ Mana) is a childhood friend of Atem and Mahad and studies magic under Mahad as his apprentice. She is a light-hearted, open, playful and caring girl, who shares a deep bond between her master and Atem.
Mana's design is based on "Dark Magician Girl". Her standard outfit consists of a beige shoulderless, sleeveless top with ruffled straps around her upper arm, a beige miniskirt, charmed bracelets around her wrists and ankles and matching necklace, belt and headwear. The character is slender and her brown hair is sporadically arranged and juts downwards in all directions.
Mana is a young magician in training at the Dawn of the Duel arc's beginning who serves the priest Mahad. After Mahad's death, she swears to become a great magician and eventually is able to summon her own Ka, the "Dark Magician Girl". Later (in the anime) when Yugi's gang discovers her, Yugi explains about the card game back home commenting on her reference to Dark Magician Girl. Mana later helps them to defeat Zorc. She is one of the only two people in the Millennium world who could see Yugi and his friends.