Kagemaru

Kagemaru 「影丸」 is the leader of the Shadow Riders and former superintendent of Duel Academy. His Shadow Charm was a small ring. In horrible health, he hoped to attain eternal youth by sacrificing Duel Monster spirits to the Sacred Beasts. During his duel with Jaden Yuki, his youth gradually returned. After being defeated, however, he returned to his aged state. He then promised to renounce his former ways and asked for forgiveness, which Jaden was happy to give. Kagemaru was then carried to the hospital via helicoptor

In the fourth season, Kagemaru returns to Duel Academy with Sartorius to tell Jaden that they have sensed a crisis that might happen somewhere down the road. After that, he was present at Jaden's graduation ceremony.

The "Kage" portion of his name is derived from the Japanese word "kage" 「影」, meaning "shadow," while the "Maru" portion means "path." Therefore, this character's name could mean "shadowy path" or "dark side." "Maru" is also a common ender for male Japanese names.

Deck
Kagemaru plays a Sacred Beast Deck. He utilizes plenty of spells and traps to support "Uria" and "Hamon", some of which summon tokens he can use to support "Raviel".