Leo and Luna

Lua and Luca are twins who aid Yusei Fudo, whom they adore and support in his duels while making fun of fate. Lua, the older twin, is lively and blundering. Luca is calm and collected.

Luca gets tired right after a duel. She also has the ability to communicate with duel monsters. Much to her brother's irritation, she tends to candidly point out the various flaws in Lua's plans and flatly insult him.

Characters biography
The twins live together in the Tops resident area. They spend most of their time alone together as their parents are usually at work. They are educated via the internet, so they spend most of their time inside.

Luca was randomly selected as someone to participate in the Fortune Cup. Not feeling like participating, Lua plans to disguise himself as her and particiapate.

Luca was able to sense Yusei, when he was shocked by the police officers. The two of them rescue him his duel with Ushio and take him to their home. Yusei wants to leave feeling like he's putting them in danger. But Lua talks him into a Duel. After Yusei wins, they manage to get him to stay for the night.

Deck
Lua plays a Deformer Deck that features an Archetype of monsters known as "Deformers" whose effects are dictated by their battle position. The monsters' appearances are derived from various objects such as mobile phones, lighters, and magnets.

Luca's Deck and it may include "Dreamsprite" and "Spirit of the Breeze" as they are seen on her side of the field, in a tabletop duel with Lua.