Olga

Olga (オルガ Oruga) is a character in the Yu-Gi-Oh! ARC-V anime. She is an exchange student from the LDS Synchro Summoning course.

Battle Royal
Olga was present at the opening ceremony for the Junior Youth Battle Royal. She later challenged Noboru Gongenzaka to a Duel in the Iceberg Area. During the Duel, Yuzu Hīragi crashed into her with Halil following after, turning their Duel into a Battle Royal. Olga and Halil worked together to defeat Gongenzaka, leaving Yuzu remaining. However, Yuzu used the effect of her "Bloom Diva the Floral Melodious Saint" to One Turn Kill the pair. Olga and Halil eventually make it to the Jungle Area. There, Halil spies two Pendulum Cards. As he starts to grab them, they fly away, causing the pair to chase after them. They are confronted by Michio Mokota and Teppei Tairyōbata. Michio Duels and defeats them, taking their remaining Pendulum Cards. Later, Olga and Halil are seen sliding down a cliff just as Yūri arrives in the Standard Dimension. Believing him to be a Junior Youth competitor, they challenge him to a Duel and lose. Yūri turns them into cards afterwards.

Pre-Friendship Cup
When Yuzu and Yūgo tried to warn the City residents about Academia's invasion, Yuzu showed them the cards containing Halil and Olga, no one believed them.

Deck
Olga uses an Arctic Beast Deck focused around Synchro Summoning her ace monster, "Arctic Beast - Iceberg Narwhal", which prevents her opponents from using Magic and Traps when it attacks, while also being able to double any effect damage her opponents take.