Gardog is a monster from Dragon World, belonging to the Deity Dragon Tribe. He resembles an average-sized dog with primarily black or dark gray and white fur, cyan eyes, a distinctive white and blue mane, and blue spiky fur behind his leg joints. He wears gold armor adorned with orange gems, extending from the base of his neck to his tail.

Gardog exhibits a calm and intelligent personality, often making sound decisions. He frequently manages or mitigates problems caused by the other members of the Gar Trio, Garcat and Garbird. He ends his sentences with "~dog". His role highlights reliability and coordination, assisting others in practical tasks like adjusting attire or filming events during social gatherings.

As a card in *Future Card Buddyfight*, Gardog is a size 1 monster with 4000 power, 2 critical, and 1000 defense. His ability activates upon entering the field if another 《Deity Dragon Tribe》 monster is present, allowing his controller to place the top two cards of their deck into the gauge. He is identified as S-BT01/0022 (R) in the "Gargantua Awakened" set and holds unlimited legal status.

Gardog's background ties him to Gargantua Dragon (Garga), Yuga Mikado's primary buddy. He operates as part of the Gar Trio alongside Garcat and Garbird, frequently appearing in domestic and social settings within Yuga's household. He participated in preparations and filmed events during Yuga's graduation, showcasing his integration into daily life beyond combat.