Ryudamon (Seekers)

Ryudamon is the partner Digimon of Shuu Yulin.

Digimon Seekers
When Satsuki Tamahime reports to Shuu Yulin about her battle with Eiji Nagasumi and Yulin is surprised at how powerful Loogamon was, despite being at the Rookie level, and is also surprised that Eiji's name wasn't listed among the top executives of the Sons of Chaos with how powerful he was. She praises Satsuki for somehow figuring out his real name though is less impressed upon learning he had simply told her for seemingly no reason. She berates Satsuki for going passed the Mind Link limit once again and tells her that doing so risks death and that she needs to stop doing it as she doesn't want any member of the DigiPolice to die. Satsuki apologizes though Yulin ignores her and opens up the file on Eiji to learn more about his life. Within the file was a recent video of him in the real world outside the Tokyo University of Electrical and Computer Engineering with this surprising Yulin, since he wasn't a student there. Yulin notices something and tells Satsuki to zoom in on Eiji's arm with them doing so revealing he owned a Digimon Linker. Ryudamon hololizes within the office to watch the video as well which causes Yulin to compare Loogamon and Ryudamon. This has her notice they have similar interfaces on their heads.