Yu Nogi/Partners

SkullSatamon
SkullSatamon is one of Yu's Partners. It destroys parts of various cities alongside K, leading Keisuke Amazawa to challenge him to a fight to stop him. Keisuke is easily defeated, though before anything happens to Keisuke, Ryuji Mishima and his Arcadiamon (Rookie) appear, easily defeats SkullSatamon and then is absorbed by the powerful rookie level Digimon. With nothing to protect him, K flees.

Gazimon
Gazimon is one of Yu's Partners. It appears as part of Yu's team in Dominion Battles. After Digimon arrive in the real world, Yu's Gazimon has digivolved into Garurumon (Black) when helping Keisuke in dominion battles. By the time of the Master Cup, it has digivovled into a Pandamon.

Wizardmon
Wizardmon is one of Yu's Partners. It appears as part of Yu's team in Dominion Battles. By the time of the Master Cup, it has digivolvled into a Phantomon.

Gekomon
Gekomon is one of Yu's Partners. It appears as part of Yu's team in Dominion Battles. When Yu takes part in a territory battle alongside Keisuke Amazawa, it has digivolved into a Whamon. By the time of the Master Cup, it has digivolvled into a MarineAngemon