Liu Zhang the Obsidian Ranger

Liu Zhang is Liu Bei's half-brother. He looked down on Liu Bei as a worthless peasant. When he learned he was the Emerald Dragon Ranger, his minions replicated the Morpher and ranger suit. His ranger suit is upgraded with a Dragon blaster and claws.

Liu Zhang is like Rcules Husty but in Power Rangers. He runs politics for personal gain.
Obsidian Ranger aka Norn Dragon King is inspired from Legend of the White Dragon and Unicorn Gundam Banshee Norn.
There is already a black ranger on Liu Bei's team. Like the Emerald Ranger, I chose Obsidian as the color for this ranger.