Sith fanart is always the fucking worst. It feels like 4 times out of 5 it's all drawn by people whose only exposure to the lore has been the movies and a couple of video games who think that the key to character design is over-designed armor with prosthetics and an unusual lightsaber design.
They all have wrist or elbow-mounted red lightsaber blades, lightsaber projections substituting for spikes on their gear, or are something like a wookie Sith swinging a light-bow.
On the other hand, it's not like Star Wars doesn't tacitly encourage them what with every new Dark Side enemy needing a weirder hilt design than the last. Kind of Sonic OC's seeming less retarded when one remembers that SEGA has their own canon recolors.