Dark Lord Knight

"The Dark Lord Knight? Oh no. Looks like it's going to be a hand-on-hand combat between him and Yang Xiao Long now... but my money's on her."

--Su Ji-Hoon, Exeron and Striker Team Up!

The Dark Lord Knight is an undead knight with dark, stronger armor, and powerful gauntlets. He is very good at martial arts, archery and swordsmanship.

In the chapter, "Exeron and Striker Team Up!," the Dark Lord Knight fights against the Exeron Union, and after their defeat, Yang Xiao Long  defeated him with martial arts skills, and thus he served for Team RWBY, and he forgave the Exeron Union for that.