Lucidien Kallister

Lucidien Kallister (known as Tatsuhisa "Luke" Kamijo in the Japanese version, and commonly nicknamed Luke) is one of the main characters in the Yu-Gi-Oh! SEVENS anime.

He is a confident, ambitious elementary school student at Goha #7 Elementary who proudly proclaims himself the school's top Duelist. Luke is one of Yuga Ohdo's closest friends and rivals, and he strongly supports Rush Dueling while aspiring to become the ultimate "King of Duels" and rule the dueling world.

He has spiky light-blue hair, red eyes, and a dramatic personality—often boastful and theatrical, though he's deeply loyal to his friends and terrified of his older sister, Tiadosia (nicknamed "Tiger"). Luke uses a Dragon-themed deck in Rush Duels.